Interferometric Approach to Open Quantum Systems and Non-Markovian Dynamics

• URL: http://arxiv.org/abs/2008.02826v2
• Date: Tue, 30 Mar 2021 10:24:56 GMT
• Title: Interferometric Approach to Open Quantum Systems and Non-Markovian Dynamics
• Authors: O. Siltanen, T. Kuusela, J. Piilo
• Abstract summary: We combine the dynamics of open quantum systems with interferometry and interference introducing the concept of open system interferometer. By considering a single photon in a Mach-Zehnder interferometer, we theoretically show how inside the interferometer path-wise polarization dephasing dynamics is Markovian. Outside the interferometer, the open system displays rich dynamical features with distinct alternatives.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We combine the dynamics of open quantum systems with interferometry and interference introducing the concept of open system interferometer. By considering a single photon in a Mach-Zehnder interferometer, where the polarization (open system) and frequency (environment) of the photon interact, we theoretically show how inside the interferometer path-wise polarization dephasing dynamics is Markovian while the joint dynamics displays non-Markovian features. Outside the interferometer and due to interference, the open system displays rich dynamical features with distinct alternatives: Only one path displaying non-Markovian memory effects, both paths individually displaying them, or no memory effects appearing at all. Our results also illustrate that measuring the photon's path can either create or destroy non-Markovian memory effects depending on whether the measurement takes place in or outside the interferometer. Moreover, the scheme allows to probe the optical path difference inside the interferometer by studying non-Markovianity outside the interferometer. With our framework and interference, it is also possible to introduce dissipative features for the open system dynamics even though the system-environment interaction itself contains only dephasing. In general, the results open so far unexplored avenues to control open system dynamics and for fundamental studies of quantum physics.

Related papers

• Optical interference by amplitude measurement [4.805271817497192]
  We make a comprehensive study in both theory and experiment of a technique by homodyne measurement of field amplitudes to reveal interference. This works for both classical and quantum fields even though there exists distinguishability in the interfering paths of light. This technique is particularly useful for recovering interference in unbalanced interferometers with path-imbalance beyond coherence length of the input field.
  arXiv  Detail & Related papers  (2025-02-06T12:11:33Z)
• Interplay between external driving, dissipation and collective effects in the Markovian and non-Markovian regimes [0.0]
  We investigate open-system behavior in driven optical systems coupled to a bosonic field. Results reveal pronounced non-Markovian corrections to the coherent driving and a collective cross-driving effect.
  arXiv  Detail & Related papers  (2024-10-04T10:18:55Z)
• Entanglement-induced collective many-body interference [62.22849132943891]
  We propose an interferometric setting through which N-particle interference can be observed, while any interference of lower orders is strictly suppressed. We experimentally demonstrate this effect in a four-photon interferometer, where the interference is nonlocal, in principle. A joint detection of all four photons identifies a high-visibility interference pattern varying as a function of their collective four-particle phase, a genuine four-body property.
  arXiv  Detail & Related papers  (2023-10-12T18:00:02Z)
• Geometric Ramsey Interferometry with a Tripod Scheme [0.0]
  Ramsey interferometry is a key technique for precision spectroscopy and to probe the coherence of quantum systems. Here, we explore a different type of Ramsey interferometer where we perform quantum state manipulations by geometrical means. This study opens the door for more robust interferometers operating on multiple input-output ports.
  arXiv  Detail & Related papers  (2023-09-18T22:53:15Z)
• Quantum fluctuations in the small Fabry-Perot interferometer [77.34726150561087]
  We study the small, of the size of the order of the wavelength, interferometer with the main mode excited by a quantum field from a nano-LED or a laser. We find the field and the photon number fluctuation spectra inside and outside the interferometer. Results help the study, design, manufacture, and use small elements of quantum optical integrated circuits.
  arXiv  Detail & Related papers  (2022-12-27T10:02:25Z)
• Breaking the quantum Cram\'er-Rao bound with non-Markovian memory effects [0.0]
  We study the sensitivity of non-Markovian memory effects arising from an open system Mach-Zehnder interferometer. Our protocol provides an alternative way to get around the quantum Cram'er-Rao theorem.
  arXiv  Detail & Related papers  (2022-11-09T19:00:02Z)
• Two-colour spectrally multimode integrated SU(1,1) interferometer [77.34726150561087]
  We develop and investigate an integrated multimode two-colour SU (1,1) interferometer that operates in a supersensitive mode. By ensuring a proper design of the integrated platform, we suppress dispersion and thereby significantly increase the visibility of the interference pattern. We demonstrate that such an interferometer overcomes the classical phase sensitivity limit for wide parametric gain ranges, when up to $3*104$ photons are generated.
  arXiv  Detail & Related papers  (2022-02-10T13:30:42Z)
• Robust Macroscopic Matter-Wave Interferometry with Solids [1.90365714903665]
  We exploit the spatial correlations that are inherent in perturbations due to distant sources to reduce their impact on the visibility of interference patterns. We develop a general framework that makes use of N+1 interferometers that may differ in their masses to correct for potential environmental fields up to order N. We also show that the same ideas can be extended to the protection of entanglement between pairs of interferometers.
  arXiv  Detail & Related papers  (2021-07-30T17:52:48Z)
• 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)
• Aligning an optical interferometer with beam divergence control and continuous action space [64.71260357476602]
  We implement vision-based alignment of an optical Mach-Zehnder interferometer with a confocal telescope in one arm. In an experimental evaluation, the agent significantly outperforms an existing solution and a human expert.
  arXiv  Detail & Related papers  (2021-07-09T14:23:01Z)
• Towards probing for hypercomplex quantum mechanics in a waveguide interferometer [55.41644538483948]
  We experimentally investigate the suitability of a multi-path waveguide interferometer with mechanical shutters for performing a test for hypercomplex quantum mechanics. We systematically analyse the influence of experimental imperfections that could lead to a false-positive test result.
  arXiv  Detail & Related papers  (2021-04-23T13:20:07Z)

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.