Floquet Quasiparticle Poisoning of Frozonium

• URL: http://arxiv.org/abs/2608.12454v1
• Date: Wed, 12 Aug 2026 18:00:00 GMT
• Title: Floquet Quasiparticle Poisoning of Frozonium
• Abstract summary: Periodic driving can suppress the Josephson nonlinearity of a fluxonium superconducting circuit.<n>We show that this dynamically frozen behavior does not generically suppress quasiparticle-induced dissipation in the resulting frozonium circuit.
• Score: 4.125081504021829
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Periodic driving can suppress the Josephson nonlinearity of a fluxonium superconducting circuit, producing a nearly harmonic Floquet spectrum at isolated freezing points [K. Lewellen et al., Newton 2, 100434 (2026)]. Here we show that this dynamically frozen behavior does not generically suppress quasiparticle-induced dissipation in the resulting frozonium circuit. We formulate quasiparticle processes in the frozonium using a Floquet framework and analyze both drive-assisted Cooper-pair breaking and tunneling of pre-existing quasiparticles. Pair generation is controlled by gap-breaking thresholds at high drive frequencies, while multiphoton resonances produce pronounced rate enhancements at lower frequencies. Quasiparticle tunneling exhibits connected resonance structures organized by the harmonic Floquet-Magnus spectrum near the freezing point, with resonant hybridization generating characteristic avoided crossings. Our results show that suitable operating regimes must balance dynamical freezing against quasiparticle loss and provide a framework for identifying experimental drive parameters away from harmful resonances.

Related papers

• Floquet Entanglement Generation in Parametrically Driven Coupled Superconducting Qubits [0.0]
  We investigate the generation of entanglement in a system of two superconducting qubits coupled through a parametrically driven longitudinal interaction.<n>Using Floquet theory and exact numerical simulations, we analyze the time evolution of the system in a separable ground state.<n>Our results reveal a nontrivial mechanism for entanglement generation, fundamentally distinct from the conventional resonant excitation to an entangled eigenstate.
  arXiv  Detail & Related papers  (2026-06-05T19:21:17Z)
• Coherent spectroscopy of collective excitations in superfluid helium far from equilibrium [41.99844472131922]
  We employ ultrafast coherent control with sequences of femtosecond pulses to perform spectroscopy of excitations in superfluid helium far from equilibrium.<n>By measuring the time-resolved optical birefringence, we track the nonequilibrium dynamics of maxon pairs and Pitaevskii plateau excitations.<n>Results demonstrate the ability to extract previously inaccessible information about collective excitations in a strongly interacting quantum fluid.
  arXiv  Detail & Related papers  (2026-05-18T04:17:55Z)
• Breakdown of Disorder-Suppressed Floquet Heating under Two-Frequency Driving [0.004946813276951616]
  Floquet driving enables Hamiltonian engineering and nonequilibrium phases, but interacting systems eventually heat by absorbing energy from the drive.<n> Disorder can greatly delay this process, yielding long-lived prethermal plateaus.<n>We show that this protection can fail when pulse-train control introduces a second driving frequency and when the disorder fluctuates.
  arXiv  Detail & Related papers  (2026-04-03T22:39:36Z)
• Observation of disorder-induced superfluidity [121.09589727417034]
  We explore phases arising from the interplay between disorder, kinetic energy, and interactions on a superconducting processor.<n>Our results provide strong experimental evidence for disorder-induced superfluidity.
  arXiv  Detail & Related papers  (2025-12-24T20:38:43Z)
• Dissipation and noise in strongly driven Josephson junctions [0.0]
  We show that a strong drive even at a frequency lower than twice the superconductor gap parameter can activate dissipation in the junctions due to photon-assisted breaking of the Cooper pairs.<n>We also predict pronounced memory effects in the driven Josephson junctions, which are appealing for both theoretical and experimental studies of non-Markovian physics in superconducting quantum circuits.
  arXiv  Detail & Related papers  (2025-04-09T13:31:18Z)
• Understanding Floquet Resonances in Ultracold Gas Scattering [0.0]
  Sharp resonances occur, at which the s-wave scattering length can be tuned to large positive and negative values.<n>We show that the shape of these resonances is described by a simple formula, and find that both resonance position and prefactor can be altered by the driving strength.
  arXiv  Detail & Related papers  (2025-02-28T19:00:00Z)
• Frozonium: Freezing Anharmonicity in Floquet Superconducting Circuits [0.9660179680180351]
  Floquet engineering is a powerful method that can be used to modify the properties of interacting many-body Hamiltonians.<n>We consider the physics of an inductively shunted superconducting Josephson junction in the presence of Floquet drives.
  arXiv  Detail & Related papers  (2025-01-17T19:00:00Z)
• Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory [39.58317527488534]
  Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials. We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model. We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
  arXiv  Detail & Related papers  (2023-07-21T18:00:07Z)
• Reminiscence of classical chaos in driven transmons [117.851325578242]
  We show that even off-resonant drives can cause strong modifications to the structure of the transmon spectrum rendering a large part of it chaotic. Results lead to a photon number threshold characterizing the appearance of chaos-induced quantum demolition effects.
  arXiv  Detail & Related papers  (2022-07-19T16:04:46Z)
• In-Gap Band Formation in a Periodically Driven Charge Density Wave Insulator [68.8204255655161]
  Periodically driven quantum many-body systems host unconventional behavior not realized at equilibrium. We investigate such a setup for strongly interacting spinless fermions on a chain, which at zero temperature and strong interactions form a charge density wave insulator.
  arXiv  Detail & Related papers  (2022-05-19T13:28:47Z)
• Rotating Majorana Zero Modes in a disk geometry [75.34254292381189]
  We study the manipulation of Majorana zero modes in a thin disk made from a $p$-wave superconductor. We analyze the second-order topological corner modes that arise when an in-plane magnetic field is applied. We show that oscillations persist even in the adiabatic phase because of a frequency independent coupling between zero modes and excited states.
  arXiv  Detail & Related papers  (2021-09-08T11:18:50Z)
• Fano interference in quantum resonances from angle-resolved elastic scattering [62.997667081978825]
  We show that probing the angular dependence of the cross section allows us to unveil asymmetric Fano profiles in a single channel shape resonance. We observe a shift in the peak of the resonance profile in the elastic collisions between metastable helium and deuterium molecules.
  arXiv  Detail & Related papers  (2021-05-12T20:41:25Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.