Open Quantum Theory of Shot Noise in Dissipative Chiral Transport

• URL: http://arxiv.org/abs/2605.14263v1
• Date: Thu, 14 May 2026 02:05:52 GMT
• Title: Open Quantum Theory of Shot Noise in Dissipative Chiral Transport
• Abstract summary: We show that current noise is governed by two competing factors: the average occupancy distribution and particle-number fluctuations.<n>We propose an inversion scheme to experimentally reconstruct the hidden occupancy distribution directly from measurable noise cumulants.
• Score: 11.518466877864666
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We develop an open quantum theory for shot-noise dynamics in dissipative chiral transport. By mapping a system under consideration onto a quantum circuit, we show that current noise is governed by two competing factors: the average occupancy distribution and particle-number fluctuations. With energy fully relaxed, shot noise is strongly suppressed, reflecting the stacking of electrons into lower energy states due to dissipation. This process quenches the partition noise from partially occupied levels, and finally isolates the residual noise protected by strong $U(1)$ symmetry. Moreover, selectively heating the source against the bath uncovers the underlying competition between the noise contributions from the occupancy distribution and those from the particle-number fluctuations. It triggers a sign reversal in inter-channel correlation noise, a signature masked by seemingly identical single-channel thermal noises. We propose an inversion scheme to experimentally reconstruct the hidden occupancy distribution directly from measurable noise cumulants.

Related papers

• Taking Advantage of Noise in Distributed Random Quantum Circuits [0.0]
  Adding noise can make a random quantum circuit look faster without making its unitary dynamics more random.<n>This distinction is especially relevant in modular processors, where local gates randomize each core and scarce inter-core communication must spread that randomness across the full device.<n>We study this problem with a reduced second-moment transfer-matrix theory for Pauli second moments in distributed random circuits affected by the amplitude-damping, depolarizing, and dephasing noise channels.
  arXiv  Detail & Related papers  (2026-09-10T17:53:51Z)
• Population-Dominated Ergotropy in a Capacitively Coupled Double-Quantum-Dot Battery under 1/f Charge Noise [0.0]
  extractable work storage is investigated in a capacitively coupled double quantum dot (DQD) quantum battery.<n>We analyze the total ergotropy, its population and coherent contributions, the energy basis populations, a passive ordering violation diagnostic, and the Jensen-Shannon coherence of the noise-averaged state.
  arXiv  Detail & Related papers  (2026-06-26T13:46:41Z)
• Frozen and Growing Quantum Work under Noise: Coherence and Correlations as Key Resources [0.0]
  We investigate the decomposition of ergotropy into incoherent and coherent contributions for quantum systems.<n>We show that noise can assist energy storage, challenging the conventional view of noise as purely detrimental.
  arXiv  Detail & Related papers  (2026-02-21T15:01:45Z)
• Universality in the Anticoncentration of Noisy Quantum Circuits at Finite Depths [0.0]
  We present universal properties of the anticoncentration of noisy quantum circuits at finite depth.<n>In the weak-noise regime different types of noise act in a similar fashion, leading to a universal distribution of bit-string probabilities.<n>We show that, contrary to previous belief, the late-time XEB does give access to the global circuit fidelity, even for large noise strengths.
  arXiv  Detail & Related papers  (2025-08-20T18:00:07Z)
• Resonance fluorescence of noisy systems [0.0]
  We develop a theory of resonance fluorescence in the low excitation limit on systems in which the transition energy is subject to noise. We show that different classes of noise influence the RF spectrum in a characteristic way.
  arXiv  Detail & Related papers  (2023-03-02T19:00:35Z)
• Autonomous coherence protection of a two-level system in a fluctuating environment [68.8204255655161]
  We re-examine a scheme originally intended to remove the effects of static Doppler broadening from an ensemble of non-interacting two-level systems (qubits) We demonstrate that this scheme is far more powerful and can also protect a single (or even an ensemble) qubit's energy levels from noise which depends on both time and space.
  arXiv  Detail & Related papers  (2023-02-08T01:44:30Z)
• Theory of qubit noise characterization using the long-time cavity transmission [0.0]
  Noise induced decoherence is one of the main threats to large-scale quantum computation. We solve the quantum Langevin equations exactly for a noise-free system and treat the noise as a perturbation. We find that noise characteristics are imprinted in the long-time transmission in convolutions containing the power spectral density.
  arXiv  Detail & Related papers  (2022-10-21T11:39:50Z)
• Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter [62.997667081978825]
  We introduce a low-overhead protocol to reverse this degradation. We present two trapped-ion schemes for the implementation of a non-unitary probabilistic filter against amplitude damping noise. This filter can be understood as a protocol for single-copy quasi-distillation.
  arXiv  Detail & Related papers  (2022-09-06T18:18:41Z)
• High-Order Qubit Dephasing at Sweet Spots by Non-Gaussian Fluctuators: Symmetry Breaking and Floquet Protection [55.41644538483948]
  We study the qubit dephasing caused by the non-Gaussian fluctuators. We predict a symmetry-breaking effect that is unique to the non-Gaussian noise.
  arXiv  Detail & Related papers  (2022-06-06T18:02:38Z)
• Learning Noise via Dynamical Decoupling of Entangled Qubits [49.38020717064383]
  Noise in entangled quantum systems is difficult to characterize due to many-body effects involving multiple degrees of freedom. We develop and apply multi-qubit dynamical decoupling sequences that characterize noise that occurs during two-qubit gates.
  arXiv  Detail & Related papers  (2022-01-26T20:22:38Z)
• Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
  Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
  arXiv  Detail & Related papers  (2021-07-23T07:30:57Z)
• Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
  We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit. We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront. The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
  arXiv  Detail & Related papers  (2020-03-09T21:27:02Z)

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.