Publications Hassler Group – Institute for Quantum Information

Photon counting beyond the rotating-wave approximation
S. Kim and F. Hassler
arXiv:2602.10950.
Gate-tunable Josephson diodes in magic-angle twisted bilayer graphene
A. Rothstein, R. J. Dolleman, L. Klebl, A. Achtermann, F. Volmer, K. Watanabe, T. Taniguchi, F. Hassler, L. Banszerus, B. Beschoten, and C. Stampfer
arXiv:2510.15503.
Topological quantum computing
F. Hassler
arXiv:2410.13547.
Tunable diode effect in a superconducting tunnel junction with biharmonic drive
D. Scheer, R. S. Souto, F. Hassler, and J. Danon
New J. Phys. 27, 033013 (2025), (arXiv:2410.03433).
The superconducting clock-circuit: Improving the coherence of Josephson radiation beyond the thermodynamic uncertainty relation
D. Scheer, J. Völler, and F. Hassler
SciPost Phys. 17, 140 (2024), (arXiv:2406.14435).
Protected gap closing and reopening in topological-insulator Josephson junctions
J. Schluck, E. Nikodem, A. Montag, A. Ziesen, M. Bagchi, F. Hassler, and Y. Ando
arXiv:2406.08265.
Interaction-induced strong zero modes in short quantum dot chains with time-reversal symmetry
A. M. Bozkurt, S. Miles, S. L. D. ten Haaf, C.-X. Liu, F. Hassler, and M. Wimmer
arXiv:2405.14940.
Superbunched radiation of a tunnel junction due to charge quantization
S. Kim and F. Hassler
Phys. Rev. Lett. 133, 116301 (2024), (arXiv:2404.08460).
Non-Abelian anyon statistics through AC conductance of a Majorana interferometer
A. Nava, R. Egger, F. Hassler, and D. Giuliano
Phys. Rev. Lett. 133, 146604 (2024), (arXiv:2403.03757).
Tuning the supercurrent distribution in parallel ballistic graphene Josephson junctions
P. Schmidt, L. Banszerus, B. Frohn, S. Blien, K. Watanabe, T. Taniguchi, A. K. Hüttel, B. Beschoten, F. Hassler, and C. Stampfer
Phys. Rev. Applied 20, 054049 (2023), (arXiv:2310.12040).
Two-point spectroscopy of Fibonacci topoelectrical circuits
S. Franca, T. Seidemann, F. Hassler, J. van den Brink, and I. C. Fulga
Phys. Rev. B 109, L241103 (2024), (arXiv:2309.16432).
On chip AC driving for dual Shapiro steps
D. Scheer and F. Hassler
Phys. Rev. B 108, 195416 (2023), (arXiv:2307.03448).
Time-dependent driving and topological protection in the fractional Josephson effect
A. Kenawy, F. Hassler, and R.-P. Riwar
Phys. Rev. B 109, 245423 (2024), (arXiv:2306.09440).
Synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions: Evidence for a Shapiro-like current step
F. Kaap, D. Scheer, F. Hassler, and S. Lotkhov
Phys. Rev. Lett. 132, 027001 (2024), (arXiv:2306.06996).
Counting interacting electrons in one dimension
O. Kashuba, T. L. Schmidt, F. Hassler, A. Haller, and R.-P. Riwar
Phys. Rev. B 108, 235133 (2023), (arXiv:2305.15906).
Third quantization for bosons: symplectic diagonalization, non-Hermitian Hamiltonian, and symmetries
S. Kim and F. Hassler
J. Phys. A 56, 385303 (2023), (arXiv:2304.02367).
Particle-hole symmetry protects spin-valley blockade in graphene quantum dots
L. Banszerus, S. Möller, K. Hecker, E. Icking, K. Watanabe, T. Taniguchi, F. Hassler, C. Volk, and C. Stampfer
Nature 618, 51 (2023), (arXiv:2303.10201).
Geometry-independent tight-binding method for massless Dirac fermions in two dimensions
A. Ziesen, I. C. Fulga, and F. Hassler
Phys. Rev. B 107, 195409 (2023), (arXiv:2302.07024).
Statistical Majorana Bound State Spectroscopy
A. Ziesen, A. Altland, R. Egger, and F. Hassler
Phys. Rev. Lett. 130, 106001 (2023), (arXiv:2211.15296).
Radiation statistics of a degenerate parametric oscillator at threshold
F. Hassler, S. Kim, and L. Arndt
SciPost Phys. 14, 156 (2023), (arXiv:2208.14886).
Period tripling due to Josephson parametric down-conversion beyond the rotating-wave approximation
L. Arndt and F. Hassler
Phys. Rev. B 106, 014513 (2022), (arXiv:2204.12210).
Electromotive force in driven topological quantum circuits
A. Kenawy, F. Hassler, and R.-P. Riwar
Phys. Rev. B 106, 035430 (2022), (arXiv:2204.05087).
Period tripling due to parametric down-conversion in circuit QED
L. Arndt and F. Hassler
Phys. Rev. Lett. 128, 187701 (2022), (arXiv:2111.06202).
Non-Hermitian physics without gain or loss: the skin effect of reflected waves
S. Franca, V. Könye, F. Hassler, J. van den Brink, and I. C. Fulga
Phys. Rev. Lett. 129, 086601 (2022), (arXiv:2111.02263).
Topological reflection matrix
S. Franca, F. Hassler, and I. C. Fulga
Phys. Rev. B 105, 155121 (2022), (arXiv:2109.08610).
Phase diagram of an extended parafermion chain
J. Wouters, F. Hassler, H. Katsura, and D. Schuricht
SciPost Phys. Core 5, 008 (2022), (arXiv:2106.15823).
Low-energy in-gap states of vortices in superconductor-semiconductor heterostructures
A. Ziesen and F. Hassler
J. Phys.: Condens. Matter 33, 294001 (2021), (arXiv:2101.06208).
Minigap and Andreev bound states in ballistic graphene
L. Banszerus, F. Libisch, A. Ceruti, S. Blien, K. Watanabe, T. Taniguchi, A. K. Hüttel, B. Beschoten, F. Hassler, and C. Stampfer
arXiv:2011.11471.
Phase-coherent heat circulators with normal or superconducting contacts
M. Acciai, F. Hajiloo, F. Hassler, and J. Splettstoesser
Phys. Rev. B 103, 085409 (2021), (arXiv:2011.10122).
Network model for higher-order topological phases
H. Liu, S. Franca, A. G. Moghaddam, F. Hassler, and I. C. Fulga
Phys. Rev. B 103, 115428 (2021), (arXiv:2009.07877).
Long-range exchange interaction between spin qubits mediated by a superconducting link at finite magnetic field
L. Gonzalez Rosado, F. Hassler, and G. Catelani
Phys. Rev. B 103, 035430 (2021), (arXiv:2009.05775).
Universality of photon counting below a local bifurcation threshold
L. Arndt and F. Hassler
Phys. Rev. A 103, 023506 (2021), (arXiv:2009.01063).
Exploiting Aharonov-Bohm oscillations to probe Klein tunneling in tunable pn-junctions in graphene
J. Dauber, K. J. A. Reijnders, L. Banszerus, A. Epping, K. Watanabe, T. Taniguchi, M. I. Katsnelson, F. Hassler, and C. Stampfer
arXiv:2008.02556.
Half-integer charge injection by a Josephson junction without excess noise
F. Hassler, A. Grabsch, M.J. Pacholski, D.O. Oriekhov, O. Ovdat, I. Adagideli, and C.W.J. Beenakker
Phys. Rev. B 102, 045431 (2020), (arXiv:2005.08655).
Weak localization corrections to the thermal conductivity in s-wave superconductors
L. Gonzalez Rosado, F. Hassler, and G. Catelani
Phys. Rev. B 101, 174202 (2020), (arXiv:2002.05590).
Simulating Floquet topological phases in static systems
S. Franca, F. Hassler, and I. C. Fulga
SciPost Phys. Core 4, 007 (2021), (arXiv:2001.08217).
Observation of the spin-orbit gap in bilayer graphene by one-dimensional ballistic transport
L. Banszerus, B. Frohn, T. Fabian, S. Somanchi, A. Epping, M. Müller, D. Neumaier, K. Watanabe, T. Taniguchi, F. Libisch, B. Beschoten, F. Hassler, and C. Stampfer
Phys. Rev. Lett. 124, 177701 (2020), (arXiv:1911.13176).
Weak measurement protocols for Majorana bound state identification
J. Manousakis, C. Wille, A. Altland, R. Egger, K. Flensberg, and F. Hassler
Phys. Rev. Lett. 124, 096801 (2020), (arXiv:1910.10591).
Time-resolved electrical detection of chiral edge vortex braiding
İ. Adagideli, F. Hassler, A. Grabsch, M. Pacholski, and C. W. J. Beenakker
SciPost Phys. 8, 013 (2020), (arXiv:1907.02422).
Topological ordering in the Majorana Toric Code
A. Ziesen, F. Hassler, and A. Roy
Phys. Rev. B 100, 104508 (2019), (arXiv:1906.05158).
Optimal gauge for the multimode Rabi model in circuit QED
M. Roth, F. Hassler, and D. P. DiVincenzo
Phys. Rev. Research 1, 033128 (2019), (arXiv:1904.08735).
Statistics of radiation due to non-degenerate Josephson parametric down conversion
L. Arndt and F. Hassler
Phys. Rev. B 100, 014505 (2019), (arXiv:1903.11529).
Mesoscopic effects in the heat conductance of superconducting-normal-superconducting and normal-superconducting junctions
F. Hajiloo, F. Hassler, and J. Splettstoesser
Phys. Rev. B 99, 235422 (2019), (arXiv:1901.11402).
Chiral one-dimensional Floquet topological insulators beyond the rotating wave approximation
D. M. Kennes, N. Müller, M. Pletyukhov, C. Weber, C. Bruder, F. Hassler, J. Klinovaja, D. Loss, and H. Schoeller
Phys. Rev. B 100, 041103(R) (2019), (arXiv:1811.12062).
Equation of motion approach to black-box quantization: Taming the multi-mode Jaynes-Cummings model
F. Hassler, J. Stubenrauch, and A. Ciani
Phys. Rev. B 99, 014515 (2019), (arXiv:1811.03085).
Dynamical structure factor in the non-Abelian phase of the Kitaev honeycomb model in the presence of quenched disorder
D. Otten, A. Roy, and F. Hassler
Phys. Rev. B 99, 035137 (2019), (arXiv:1810.01426).
Broadband Lamb shift in an engineered quantum system
M. Silveri, S. Masuda, V. Sevriuk, K. Y. Tan, M. Jenei, E. Hyyppä, F. Hassler, M. Partanen, J. Goetz, R. E. Lake, L. Grönberg, and M. Möttönen
Nat. Phys. 15, 533 (2019), (arXiv:1809.00822).
Exact Rotating Wave Approximation
D. Zeuch, F. Hassler, J. Slim, and D. P. DiVincenzo
Ann. Phys. 423, 168327 (2020), (arXiv:1807.02858).
Calculation of tunnel-couplings in open gate-defined disordered quantum dot systems
J. Klos, F. Hassler, P. Cerfontaine, H. Bluhm, and L. R. Schreiber
Phys. Rev. B 98, 155320 (2018), (arXiv:1805.01728).
Breakdown of the law of reflection at a disordered graphene edge
E. Walter, T. Ö. Rosdahl, A. R. Akhmerov, and F. Hassler
Phys. Rev. Lett. 121, 136803 (2018), (arXiv:1804.04142).
Dual Shapiro steps of a phase-slip junction in the presence of a parasitic capacitance
L. Arndt, A. Roy, and F. Hassler
Phys. Rev. B 98, 014525 (2018), (arXiv:1802.08123).
Charge response of the Majorana toric code
A. Roy and F. Hassler
Phys. Rev. B 97, 024512 (2018), (arXiv:1710.04168).
Aharonov-Bohm oscillations and magnetic focusing in ballistic graphene rings
J. Dauber, M. Oellers, F. Venn, A. Epping, K. Watanabe, T. Taniguchi, F. Hassler, and C. Stampfer
Phys. Rev. B 96, 205407 (2017), (arXiv:1709.00581).
Korshunov instantons in a superconductor at elevated bias current
D. Otten and F. Hassler
Phys. Rev. B 96, 125433 (2017), (arXiv:1705.03015).
Quantum phase transitions of the Majorana toric code in the presence of finite Cooper-pair tunneling
A. Roy, B. M. Terhal, and F. Hassler
Phys. Rev. Lett. 119, 180508 (2017), (arXiv:1705.02864).
Quantum transport through MoS$_2$ constrictions defined by photodoping
A. Epping, L. Banszerus, J. Güttinger, L. Krückeberg, K. Watanabe, T. Taniguchi, F. Hassler, B. Beschoten, and C. Stampfer
J. Phys: Condens. Matter 30, 205001 (2018), (arXiv:1612.01118).
Universal power-law decay of electron-electron interactions due to nonlinear screening in a Josephson junction array
D. Otten, S. Rubbert, J. Ulrich, and F. Hassler
Phys. Rev. B 94, 115403 (2016), (arXiv:1606.06300).
Dual approach to circuit quantization using loop charges
J. Ulrich and F. Hassler
Phys. Rev. B 94, 094505 (2016), (arXiv:1605.02750).
Exchange-interaction of two spin qubits mediated by a superconductor
F. Hassler, G. Catelani, and H. Bluhm
Phys. Rev. B 92, 235401 (2015), (arXiv:1509.06380).
Second-order coherence of microwave photons emitted by a quantum point contact
F. Hassler and D. Otten
Phys. Rev. B 92, 195417 (2015), (arXiv:1509.00485).
Measurement-induced entanglement of two transmon qubits by a single photon
C. Ohm and F. Hassler
New J. Phys. 19, 053018 (2017), (arXiv:1508.05104).
Changing anyonic ground degeneracy with engineered gauge fields
E. Cobanera, J. Ulrich, and F. Hassler
Phys. Rev. B 94, 125434 (2016), (arXiv:1506.07879).
Majorana-assisted nonlocal electron transport through a floating topological superconductor
J. Ulrich and F. Hassler
Phys. Rev. B 92, 075443 (2015), (arXiv:1506.01390).
Dephasing due to quasiparticle tunneling in fluxonium qubits: a phenomenological approach
S. Spilla, F. Hassler, A. Napoli, and J. Splettstoesser
New J. Phys. 17, 065012 (2015), (arXiv:1503.04489).
Simulation of supersymmetric quantum mechanics in a Cooper-pair box shunted by a Josephson rhombus
J. Ulrich, D. Otten, and F. Hassler
Phys. Rev. B 92, 245444 (2015), (arXiv:1503.03995).
Microwave readout of Majorana qubits
C. Ohm and F. Hassler
Phys. Rev. B 91, 085406 (2015), (arXiv:1410.5445).
Supersymmetry in the Majorana Cooper-Pair Box
J. Ulrich, İ. Adagideli, D. Schuricht, and F. Hassler
Phys. Rev. B 90, 075408 (2014), (arXiv:1405.3089).
Thermal conductance as a probe of the non-local order parameter for a topological superconductor with gauge fluctuations
B. van Heck, E. Cobanera, J. Ulrich, and F. Hassler
Phys. Rev. B 89, 165416 (2014), (arXiv:1401.3539).
Measurement and dephasing of a flux qubit due to heat currents
S. Spilla, F. Hassler, and J. Splettstoesser
New J. Phys. 16, 045020 (2014), (arXiv:1311.7561).
Majorana fermions coupled to electromagnetic radiation
C. Ohm and F. Hassler
New J. Phys. 16, 015009 (2014), (arXiv:1309.7314).
Effects of non-equilibrium noise on a quantum memory encoded in Majorana zero modes
F. Konschelle and F. Hassler
Phys. Rev. B 88, 075431 (2013), (arXiv:1306.2519).
Suppression of 2π phase-slip due to hidden zero modes in one dimensional topological superconductors
D. Pekker, C.-Y. Hou, D. L. Bergman, S. Goldberg, İ. Adagideli, and F. Hassler
Phys. Rev. B 87, 064506 (2013), (arXiv:1209.2161).
Strongly interacting Majorana modes in an array of Josephson junctions
F. Hassler and D. Schuricht
New J. Phys. 14, 125018 (2012), (arXiv:1206.2134).
Dynamical detection of Majorana fermions in current-biased nanowires
F. Domínguez, F. Hassler, and G. Platero
Phys. Rev. B 86, 140503(R) (2012), (arXiv:1202.0642).
From Majorana fermions to topological order
B. M. Terhal, F. Hassler, and D. P. DiVincenzo
Phys. Rev. Lett. 108, 260504 (2012), (arXiv:1201.3757).
Statistics of radiation at Josephson parametric resonance
C. Padurariu, F. Hassler, and Yu. V. Nazarov
Phys. Rev. B 86, 054514 (2012), (arXiv:1112.4159).
Coulomb-assisted braiding of Majorana fermions in a Josephson junction array
B. van Heck, A. R. Akhmerov, F. Hassler, M. Burrello, and C. W. J. Beenakker
New J. Phys. 14, 035019 (2012), (arXiv:1111.6001).
Topological quantum number and critical exponent from conductance fluctuations at the quantum Hall plateau transition
I. C. Fulga, F. Hassler, A. R. Akhmerov, and C. W. J. Beenakker
Phys. Rev. B 84, 245447 (2011), (arXiv:1110.4280).
Coulomb stability of the 4π-periodic Josephson effect of Majorana fermions
B. van Heck, F. Hassler, A. R. Akhmerov, and C. W. J. Beenakker
Phys. Rev. B 84, 180502(R) (2011), (arXiv:1108.1095).
Scattering theory of topological insulators and superconductors
I. C. Fulga, F. Hassler, and A. R. Akhmerov
Phys. Rev. B 85, 165409 (2012), (arXiv:1106.6351).
Top-transmon: hybrid superconducting qubit for parity-protected quantum computation
F. Hassler, A. R. Akhmerov, and C. W. J. Beenakker
New J. Phys. 13, 095004 (2011), (arXiv:1105.0315).
Scattering formula for the topological quantum number of a disordered multi-mode wire
I. C. Fulga, F. Hassler, A. R. Akhmerov, and C. W. J. Beenakker
Phys. Rev. B 83, 155429 (2011), (arXiv:1101.1749).
Probing Majorana edge states with a flux qubit
C.-Y. Hou, F. Hassler, A. R. Akhmerov, and J. Nilsson
Phys. Rev. B 84, 054538 (2011), (arXiv:1101.0604).
Proposal for an optical laser producing light at half the Josephson frequency
F. Godschalk, F. Hassler, and Yu. V. Nazarov
Phys. Rev. Lett. 107, 073901 (2011), (arXiv:1010.5960).
Quantized conductance at the Majorana phase transition in a disordered superconducting wire
A. R. Akhmerov, J. P. Dahlhaus, F. Hassler, M. Wimmer, and C. W. J. Beenakker
Phys. Rev. Lett. 106, 057001 (2011), (arXiv:1009.5542).
Measurement back-action in quantum point-contact charge sensing
B. Küng, S. Gustavsson, T. Choi, I. Shorubalko, O. Pfäffli, F. Hassler, G. Blatter, M. Reinwald, W. Wegscheider, S. Schön, T. Ihn, and and K. Ensslin
Entropy 12, 1721 (2010), (pdf).
Flat-lens focusing of electrons on the surface of a topological insulator
F. Hassler, A. R. Akhmerov, and C. W. J. Beenakker
Phys. Rev. B 82, 125423 (2010), (arXiv:1005.5093).
Anyonic interferometry without anyons: How a flux qubit can read out a topological qubit
F. Hassler, A. R. Akhmerov, C.-Y. Hou, and C. W. J. Beenakker
New J. Phys. 12, 125002 (2010), (arXiv:1005.3423).
Dynamical unbinding transition in a periodically driven Mott insulator
F. Hassler, A. Rüegg, M. Sigrist, and G. Blatter
Phys. Rev. Lett. 104, 220402 (2010), (arXiv:1002.3085).
Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium
I. C. Fulga, F. Hassler, and C. W. J. Beenakker
Phys. Rev. B 81, 115331 (2010), (arXiv:1001.4389).
Influence of a random telegraph process on the transport through a point contact
F. Hassler, G. B. Lesovik, and G. Blatter
Eur. Phys. J. B 83, 349 (2011), (arXiv:1001.0578).
Quantum manipulation in a Josephson light-emitting diode
F. Hassler, Yu. V. Nazarov, and L. P. Kouwenhoven
Nanotechnology 21, 274004 (2010), (arXiv:0911.5100).
Noise-induced spectral shift measured in a double quantum dot
B. Küng, S. Gustavsson, T. Choi, I. Shorubalko, T. Ihn, S. Schön, F. Hassler, G. Blatter, and K. Ensslin
Phys. Rev. B 80, 115315 (2009), (arXiv:0904.3656).
Single-particle excitations generated by voltage pulses
F. Hassler, B. Küng, G. B. Lesovik, and G. Blatter
AIP Conf. Proc. 1134, 113 (2009), (arXiv:1110.0441).
Coherent pumping of a Mott insulator: Fermi golden rule versus Rabi oscillations
F. Hassler and S. D. Huber
Phys. Rev. A 79, 021607(R) (2009), (arXiv:0812.0532).
Wave-packet formalism of full counting statistics
F. Hassler, M. V. Suslov, G. M. Graf, M. V. Lebedev, G. B. Lesovik, and G. Blatter
Phys. Rev. B 78, 165330 (2008), (arXiv:0802.0143).
Effects of exchange symmetry on full counting statistics
F. Hassler, G. B. Lesovik, and G. Blatter
Phys. Rev. Lett. 99, 076804 (2007), (cond-mat/0612693).
Using qubits to measure fidelity in mesoscopic systems
G. B. Lesovik, F. Hassler, and G. Blatter
Phys. Rev. Lett. 96, 106801 (2006), (cond-mat/0507200).

No results