A quantum ticking self-oscillator using delayed feedback
- URL: http://arxiv.org/abs/2307.14567v1
- Date: Thu, 27 Jul 2023 01:01:07 GMT
- Title: A quantum ticking self-oscillator using delayed feedback
- Authors: Yanan Liu, William J. Munro, and Jason Twamley
- Abstract summary: Research into the development of quantum self-oscillation has received much interest.
We first design a linear quantum SSO which exhibits perfect oscillation without phase diffusion.
We then explore a nonlinear delayed quantum SSO but find it exhibits dephasing similar to previously studied non-delayed systems.
- Score: 6.887777592015404
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Self-sustained oscillators (SSOs) is a commonly used method to generate
classical clock signals and SSOs using delayed feedback have been developed
commercially which possess ultra-low phase noise and drift. Research into the
development of quantum self-oscillation, where one can also have a periodic and
regular output {\em tick}, that can be used to control quantum and classical
devices has received much interest and quantum SSOs so far studied suffer from
phase diffusion which leads to the smearing out of the quantum oscillator over
the entire limit cycle in phase space seriously degrading the system's ability
to perform as a self-oscillation. In this paper, we explore quantum versions of
time-delayed SSOs, which has the potentials to develop a ticking quantum clock.
We first design a linear quantum SSO which exhibits perfect oscillation without
phase diffusion. We then explore a nonlinear delayed quantum SSO but find it
exhibits dephasing similar to previously studied non-delayed systems.
Related papers
- Demonstration of Scully-Drühl-type quantum erasers on quantum computers [0.0]
We present a novel quantum circuit that genuinely implements the Scully-Dr"uhl-type delayed-choice quantum eraser.
Experiments conducted on IBM Quantum and IonQ processors demonstrate that the recovery of interference patterns, to varying degrees, aligns closely with theoretical predictions.
arXiv Detail & Related papers (2024-09-12T13:58:06Z) - Hysteresis and Self-Oscillations in an Artificial Memristive Quantum Neuron [79.16635054977068]
We study an artificial neuron circuit containing a quantum memristor in the presence of relaxation and dephasing.
We demonstrate that this physical principle enables hysteretic behavior of the current-voltage characteristics of the quantum device.
arXiv Detail & Related papers (2024-05-01T16:47:23Z) - QuantumSEA: In-Time Sparse Exploration for Noise Adaptive Quantum
Circuits [82.50620782471485]
QuantumSEA is an in-time sparse exploration for noise-adaptive quantum circuits.
It aims to achieve two key objectives: (1) implicit circuits capacity during training and (2) noise robustness.
Our method establishes state-of-the-art results with only half the number of quantum gates and 2x time saving of circuit executions.
arXiv Detail & Related papers (2024-01-10T22:33:00Z) - Prolonging a discrete time crystal by quantum-classical feedback [0.0]
We propose a timeperiodic scheme that leverages quantum-classical feedback protocols in subregions of the system to enhance a time crystal signal significantly exceeding the decoherence time of the device.
Based on classical simulation quantum circuit realizations, we find that this approach is suitable for implementation on existing quantum phases and hardware.
arXiv Detail & Related papers (2023-09-05T11:43:26Z) - Measurement-induced entanglement and teleportation on a noisy quantum
processor [105.44548669906976]
We investigate measurement-induced quantum information phases on up to 70 superconducting qubits.
We use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases.
Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.
arXiv Detail & Related papers (2023-03-08T18:41:53Z) - Probing finite-temperature observables in quantum simulators of spin
systems with short-time dynamics [62.997667081978825]
We show how finite-temperature observables can be obtained with an algorithm motivated from the Jarzynski equality.
We show that a finite temperature phase transition in the long-range transverse field Ising model can be characterized in trapped ion quantum simulators.
arXiv Detail & Related papers (2022-06-03T18:00:02Z) - Out-of-time-order correlator in the quantum Rabi model [62.997667081978825]
We show that out-of-time-order correlator derived from the Loschmidt echo signal quickly saturates in the normal phase.
We show that the effective time-averaged dimension of the quantum Rabi system can be large compared to the spin system size.
arXiv Detail & Related papers (2022-01-17T10:56:57Z) - Chaos in coupled Kerr-nonlinear parametric oscillators [0.0]
We investigate complex dynamics, i.e., chaos, in two coupled nondissipative KPOs at a few-photon level.
We conclude that some of them can be regarded as quantum signatures of chaos, together with energy-level spacing statistics.
arXiv Detail & Related papers (2021-10-08T10:35:12Z) - Revival of oscillation and symmetry breaking in coupled quantum
oscillators [13.939388417767136]
We demonstrate for the first time that quantum oscillation suppression states can be revoked.
In sharp contrast to the classical system, we show that in the deep quantum regime the feedback parameter fails to revive oscillation.
arXiv Detail & Related papers (2021-05-22T05:03:58Z) - Time periodicity from randomness in quantum systems [0.0]
Many complex systems can spontaneously oscillate under non-periodic forcing.
We show that this behavior can emerge within the repeated-interaction description of open quantum systems.
Specifically, we consider a many-body quantum system that undergoes dissipation due to sequential coupling with auxiliary systems at random times.
arXiv Detail & Related papers (2021-04-27T18:02:31Z) - Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor.
We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
arXiv Detail & Related papers (2021-01-21T22:18:49Z)
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.