Enhanced phase sensitivity in a Mach-Zehnder interferometer via photon recycling

• URL: http://arxiv.org/abs/2302.08717v1
• Date: Fri, 17 Feb 2023 06:16:10 GMT
• Title: Enhanced phase sensitivity in a Mach-Zehnder interferometer via photon recycling
• Authors: Dong Li, Chun-Hua Yuan, Xiaoping Ma, Qingle Wang, Hwang Lee, Yao Yao, Weiping Zhang
• Abstract summary: We propose an alternative scheme for phase estimation in a Mach-Zehnder interferometer (MZI) with photon recycling. It can achieve an enhancement factor of 9.32 in the phase sensitivity compared with the conventional scheme even with a photon loss of 10% on the photon-recycled arm.
• Score: 9.383297987067397
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose an alternative scheme for phase estimation in a Mach-Zehnder interferometer (MZI) with photon recycling. It is demonstrated that with the same coherent-state input and homodyne detection, our proposal possesses a phase sensitivity beyond the traditional MZI. For instance, it can achieve an enhancement factor of 9.32 in the phase sensitivity compared with the conventional scheme even with a photon loss of 10% on the photon-recycled arm. From another point of view, the quantum Cramer-Rao bound (QCRB) is also investigated. It is found that our scheme is able to achieve a lower QCRB than the traditional one. Intriguingly, the QCRB of our scheme is dependent of the phase shift phi while the traditional scheme has a constant QCRB regardless of the phase shift. Finally, we present the underlying mechanisms behind the enhanced phase sensitivity. We believe that our results provide another angle from which to enhance the phase sensitivity in a MZI via photon recycling.

Related papers

• Phase estimation via photon subtraction at the output of the hybrid interferometer [2.9910602281565932]
  hybrid interferometer integrating an optical parametric amplifier and a beam splitter has the potential to outperform the SU (1,1) interferometer.<n>We propose a quantum metrology scheme utilizing multi-photon subtraction at the output and replacing the conventional 50:50 beam splitter with a variable beam splitter to enhance robustness against photon loss.<n>Our scheme achieves sensitivities beyond the Heisenberg limit even under 20% photon loss.
  arXiv  Detail & Related papers  (2025-10-20T09:47:54Z)
• Phase sensitivity of lossy Mach-Zehnder interferometer via photon addition operation [1.3551878698295214]
  Photon addition operations applied to squeezed states have been shown to significantly enhance phase sensitivity.<n>We extend this approach by applying photon addition not only to coherent states but also within a Mach--Zehnder interferometer setup.<n>Results show both schemes improve phase sensitivity, quantum Fisher information, and loss resistance.
  arXiv  Detail & Related papers  (2025-10-20T03:41:25Z)
• Coherence-Mediated Quantum Thermometry in a Hybrid Circuit-QED Architecture [39.391428786947685]
  We analyze a hybrid circuit quantum electrodynamics architecture in which a superconducting qubit is dispersively coupled to two bosonic modes.<n>We show that the qubit serves as a sensitive readout of the probe mode, mapping the interference between thermal and coherent photon-number fluctuations onto measurable dephasing.<n>We derive analytic expressions for the qubit coherence envelope, compute the quantum Fisher information for temperature estimation, and demonstrate numerically that the presence of a coherent reference amplifies the qubit's sensitivity to small changes in thermal photon occupancy.
  arXiv  Detail & Related papers  (2025-10-18T03:06:40Z)
• Enhancement in phase sensitivity in displacement-assisted SU(1,1) interferometer via photon recycling [35.697394066936276]
  We propose a novel method for enhancing phase estimation in displacement-assisted SU (1,1) interferometer by incorporating the photon recycling technique.<n>Our analysis showed that utilizing the photon recycling technique, the photon-recycled DSU (1,1) interferometer performs better than the conventional DSU (1,1) interferometer for some conditions.
  arXiv  Detail & Related papers  (2025-10-04T11:15:00Z)
• Topological Phase Transitions and Mixed State Order in a Hubbard Quantum Simulator [36.556659404501914]
  Topological phase transitions challenge conventional paradigms in many-body physics.<n>We observe such a transition between one-dimensional crystalline symmetry-protected topological phases.<n>Our results demonstrate how topology and information influence quantum phase transitions.
  arXiv  Detail & Related papers  (2025-05-22T17:58:35Z)
• Phase sensitivity via photon-subtraction operations inside Mach-Zehnder interferometer [5.059716048137085]
  We study phase sensitivity, quantum Fisher information and quantum Cram'er-Rao bound under both ideal and lossy conditions.<n>The results indicate that choosing an appropriate detection method and photon subtraction scheme can significantly enhance the phase sensitivity and robustness against photon losses.<n>This research highlights the significant value of this scheme in quantum precision measurement.
  arXiv  Detail & Related papers  (2025-05-07T15:20:55Z)
• Phase Dependent Quantum Optical Coherence Tomography [0.0]
  Entanglement is a key resource in quantum technologies, enhancing precision and resolution in imaging and sensing. We show that phase-shifting entangled photon pairs in a Hong-Ou-Mandel interferometer can lead to tangible advancements in quantum sensing and probing.
  arXiv  Detail & Related papers  (2025-03-09T20:58:26Z)
• Measurement of small photon numbers in circuit QED resonators [42.01857709446569]
  Off-resonant interaction of fluctuating photons in a resonator with a qubit increases the qubit dephasing rate. We use this effect to measure a small average number of intracavity photons that are coherently or thermally driven.
  arXiv  Detail & Related papers  (2023-10-25T02:40:56Z)
• Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
  Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND) In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
  arXiv  Detail & Related papers  (2023-10-08T17:11:42Z)
• Quantum-enhanced super-sensitivity of Mach-Zehnder interferometer using squeezed Kerr state [2.0853041333330564]
  We study the phase super-sensitivity of a Mach-Zehnder interferometer (MZI) with the squeezed Kerr and coherent states as the inputs.
  arXiv  Detail & Related papers  (2023-09-09T09:32:29Z)
• Sub-0.1 degree phase locking of a single-photon interferometer [0.0]
  A single-photon Mach-Zehnder interferometer is stabilized to a phase precision of 0.05 degrees over 15 hours. The developed phase locking operates continuously, with negligible crosstalk, and for an arbitrary phase of the quantum signal.
  arXiv  Detail & Related papers  (2022-12-12T12:31:33Z)
• Quantum multiparameter estimation with multi-mode photon catalysis entangled squeezed state [8.939491159598491]
  We propose a method to generate the multi-mode entangled squeezed vacuum states (MECSVS) by embedding the cross-Kerr nonlinear medium into the Mach-Zehnder interferometer. This method realizes the exchange of quantum states between different modes based on Fredkin gate.
  arXiv  Detail & Related papers  (2022-10-27T12:45:47Z)
• Amplification of cascaded downconversion by reusing photons with a switchable cavity [62.997667081978825]
  We propose a scheme to amplify triplet production rates by using a fast switch and a delay loop. Our proof-of-concept device increases the rate of detected photon triplets as predicted.
  arXiv  Detail & Related papers  (2022-09-23T15:53:44Z)
• Remote Phase Sensing by Coherent Single Photon Addition [58.720142291102135]
  We propose a remote phase sensing scheme inspired by the high sensitivity of the entanglement produced by coherent multimode photon addition on the phase set in the remote heralding apparatus. We derive the optimal observable to perform remote phase estimation from heralded quadrature measurements.
  arXiv  Detail & Related papers  (2021-08-26T14:52:29Z)
• Improvement of phase sensitivity in SU(1,1) interferometer via a Kerr nonlinear [7.6668670515469515]
  We investigate the realistic effects of photon losses on phase sensitivity and quantum Fisher information. The Kerr nonlinear case can not only enhance the phase sensitivity and quantum Fisher information, but also significantly suppress the photon losses.
  arXiv  Detail & Related papers  (2021-03-14T04:56:13Z)
• Nonlinear phase estimation enhanced by an actively correlated Mach-Zehnder interferometer [0.4893345190925178]
  A nonlinear phase shift is introduced to a Mach-Zehnder interferometer (MZI) We present a scheme for enhancing the phase sensitivity. Based on the optimal splitting ratio of beam splitters, the phase sensitivity can beat the standard quantum limit.
  arXiv  Detail & Related papers  (2020-09-17T04:36:00Z)
• Optical repumping of resonantly excited quantum emitters in hexagonal boron nitride [52.77024349608834]
  We present an optical co-excitation scheme which uses a weak non-resonant laser to reduce transitions to a dark state and amplify the photoluminescence from quantum emitters in hexagonal boron nitride (hBN) Our results are important for the deployment of atom-like defects in hBN as reliable building blocks for quantum photonic applications.
  arXiv  Detail & Related papers  (2020-09-11T10:15:22Z)
• Inverse-designed photon extractors for optically addressable defect qubits [48.7576911714538]
  Inverse-design optimization of photonic devices enables unprecedented flexibility in tailoring critical parameters of a spin-photon interface. Inverse-designed devices will enable realization of scalable arrays of single-photon emitters, rapid characterization of new quantum emitters, sensing and efficient heralded entanglement schemes.
  arXiv  Detail & Related papers  (2020-07-24T04:30:14Z)
• Entanglement robustness to excitonic spin precession in a quantum dot [43.55994393060723]
  A semiconductor quantum dot (QD) is an attractive resource to generate polarization-entangled photon pairs. We study the excitonic spin precession (flip-flop) in a family of QDs with different excitonic fine-structure splitting (FSS) Our results reveal that coherent processes leave the time post-selected entanglement of QDs unaffected while changing the eigenstates of the system.
  arXiv  Detail & Related papers  (2020-01-31T13:50:51Z)

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.