Theory of quantum-enhanced interferometry with general Markovian light sources

• URL: http://arxiv.org/abs/2504.05111v1
• Date: Mon, 07 Apr 2025 14:15:36 GMT
• Title: Theory of quantum-enhanced interferometry with general Markovian light sources
• Authors: Erfan Abbasgholinejad, Daniel Malz, Ana Asenjo-Garcia, Rahul Trivedi,
• Abstract summary: We develop a framework to analyze quantum enhanced interferometry with general Markovian quantum light sources.<n>We show how to compute the quantum Fisher Information (QFI) of the photons emitted by a source efficiently.<n>We then use this relationship to elucidate the connection between the level structure and spectrum of the source to a potential quantum advantage in interferometry.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum optical systems comprising quantum emitters interacting with engineered optical modes generate non-classical states of light that can be used as resource states for quantum-enhanced interferometry. However, outside of well-controlled systems producing either single-mode states (e.g. Fock states or squeezed states) or highly symmetric multi-mode states (e.g. superradiant states), their potential for quantum advantage remains uncharacterized. In this work, we develop a framework to analyze quantum enhanced interferometry with general Markovian quantum light sources. First, we show how to compute the quantum Fisher Information (QFI) of the photons emitted by a source efficiently by just tracking its internal dynamics and without explicitly computing the state of the emitted photons. We then use this relationship to elucidate the connection between the level structure and spectrum of the source to a potential quantum advantage in interferometry. Finally, we analyze optimal measurement protocols that can be used to achieve this quantum advantage with experimentally available optical elements. In particular, we show that tunable optical elements with Kerr non-linearity can always be harnessed to implement the optimal measurement for any given source. Simultaneously, we also outline general conditions under which linear optics and photodetection is enough to implement the optimal measurement.

Related papers

• Quantum light sources with configurable lifetime leveraging parity-time symmetry [26.056219942960112]
  Device generates energy-time entangled photon pairs with 87.1 +- 1.1% interference visibility and a heralded second-order autocorrelation of g_h((2) ) (0)= 0.069 +- 0.001.<n>Our work highlights the potential of PT symmetry for advanced quantum applications, including high-speed communication and programmable quantum computing.
  arXiv  Detail & Related papers  (2025-04-02T07:04:31Z)
• Deterministic and reconfigurable graph state generation with a single solid-state quantum emitter [0.0]
  We demonstrate deterministic and reconfigurable graph state generation with optical solid-state integrated quantum emitters. We perform quantum state tomography of two successive photons, measuring Bell state fidelities up to 0.80$pm$0.04 and concurrences up to 0.69$pm$0.09. This simple optical scheme, compatible with commercially available quantum dot-based single photon sources, brings us a step closer to fault-tolerant quantum computing with spins and photons.
  arXiv  Detail & Related papers  (2024-10-30T23:59:54Z)
• Universal quantum frequency comb measurements by spectral mode-matching [39.58317527488534]
  We present the first general approach to make arbitrary, one-shot measurements of a multimode quantum optical source. This approach uses spectral mode-matching, which can be understood as interferometry with a memory effect.
  arXiv  Detail & Related papers  (2024-05-28T15:17:21Z)
• Deterministic entangling gates with nonlinear quantum photonic interferometers [0.0]
  We propose to exploit weakly nonlinear photonic devices to implement deterministic entangling quantum gates. It is shown that a universal set of single- and two-qubit gates can be designed by a suitable concatenation of few optical interferometric elements.
  arXiv  Detail & Related papers  (2023-06-08T09:43:48Z)
• Integrated Quantum Optical Phase Sensor [48.7576911714538]
  We present a photonic integrated circuit fabricated in thin-film lithium niobate. We use the second-order nonlinearity to produce a squeezed state at the same frequency as the pump light and realize circuit control and sensing with electro-optics. We anticipate that on-chip photonic systems like this, which operate with low power and integrate all of the needed functionality on a single die, will open new opportunities for quantum optical sensing.
  arXiv  Detail & Related papers  (2022-12-19T18:46:33Z)
• Experimental Multi-state Quantum Discrimination in the Frequency Domain with Quantum Dot Light [40.96261204117952]
  In this work, we present the experimental realization of a protocol employing a time-multiplexing strategy to optimally discriminate among eight non-orthogonal states. The experiment was built on a custom-designed bulk optics analyser setup and single photons generated by a nearly deterministic solid-state source. Our work paves the way for more complex applications and delivers a novel approach towards high-dimensional quantum encoding and decoding operations.
  arXiv  Detail & Related papers  (2022-09-17T12:59:09Z)
• Quantum nondemolition measurements with optical parametric amplifiers for ultrafast universal quantum information processing [0.0]
  Realization of a room-temperature ultra-fast photon-number-resolving (PNR) quantum nondemolition (QND) measurement would have significant implications for photonic quantum information processing (QIP) We show that a coherent pump field driving a phase-mismatched optical parametric amplifier (OPA) experiences displacements conditioned on the number of signal Bogoliubov excitations. A measurement of the pump displacement thus provides a QND measurement of the signal Bogoliubov excitations, projecting the signal mode to a squeezed photon-number state.
  arXiv  Detail & Related papers  (2022-09-02T15:23:40Z)
• Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
  We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
  arXiv  Detail & Related papers  (2022-06-03T14:52:34Z)
• Scalable multiphoton quantum metrology with neither pre- nor post-selected measurements [0.0]
  We experimentally demonstrate a scalable protocol for quantum-enhanced optical phase estimation. The robustness of two-mode squeezed vacuum states against loss allows us to outperform schemes based on N00N states. Our work is important for quantum technologies that rely on multiphoton interference.
  arXiv  Detail & Related papers  (2020-11-04T18:11:33Z)
• Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
  Integrated photonics is a robust platform for quantum information processing. Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive. Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
  arXiv  Detail & Related papers  (2020-05-19T16:46:44Z)
• Spectrally reconfigurable quantum emitters enabled by optimized fast modulation [42.39394379814941]
  Spectral control in solid state platforms such as color centers, rare earth ions, and quantum dots is attractive for realizing such applications on-chip. We propose the use of frequency-modulated optical transitions for spectral engineering of single photon emission. Our results suggest that frequency modulation is a powerful technique for the generation of new light states with unprecedented control over the spectral and temporal properties of single photons.
  arXiv  Detail & Related papers  (2020-03-27T18:24:35Z)

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.