Quantum Fourier transform on photonic qubits using cavity QED

• URL: http://arxiv.org/abs/2112.00658v2
• Date: Thu, 14 Jul 2022 20:51:14 GMT
• Title: Quantum Fourier transform on photonic qubits using cavity QED
• Authors: Yu Shi, Edo Waks
• Abstract summary: A single atom-coupled cavity system mediates the photon-photon interactions. Time-delay feedback enables a single atom-cavity system to implement a quantum Fourier transform on an arbitrary number of photonic qubits.
• Score: 9.83302372715731
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a quantum Fourier transform on photons in which a single atom-coupled cavity system mediates the photon-photon interactions. Our protocol utilizes time-delay feedback of photons and requires no active feedforward control. The time-delay feedback enables a single atom-cavity system to implement a quantum Fourier transform on an arbitrary number of photonic qubits on-the-fly, while rapid tuning of the atomic transition implements arbitrary controlled-phase gates. We analyze the performance of the protocol numerically and show that it can implement quantum Fourier transforms with tens of photons using state-of-the-art cavity quantum electrodynamics.

Related papers

• On-demand shaped photon emission based on a parametrically modulated qubit [14.88027830561737]
  A single-rail and dual-rail time-bin shaped photon generator can act as a quantum interface of a point-to-point quantum network. We develop an efficient photon field measurement setup based on the data stream processing of GPU. The results demonstrate that our method is hardware efficient, simple to implement, and scalable.
  arXiv  Detail & Related papers  (2024-05-02T16:53:54Z)
• Subtraction and Addition of Propagating Photons by Two-Level Emitters [2.321156230142032]
  We show that a passive two-level nonlinearity suffices to implement non-Gaussian quantum operations on propagating field modes. We accurately describe the single-photon subtraction process by elements of an intuitive quantum-trajectory model.
  arXiv  Detail & Related papers  (2024-04-18T16:55:33Z)
• Theory of time-bin entangled photons from quantum emitters [0.0]
  Entangled photon pairs form the foundation for many applications in the realm of quantum communication. Time-bin encoding can potentially offer an improved stability compared to polarization encoded qubits. We derive multi-time correlation functions of the time-bin encoded photon pairs, corresponding to quantum state tomographic measurements.
  arXiv  Detail & Related papers  (2024-04-12T09:23:46Z)
• Finite Pulse-Time Effects in Long-Baseline Quantum Clock Interferometry [45.73541813564926]
  We study the interplay of the quantum center-of-mass $-$ that can become delocalized $-$ together with the internal clock transitions. We show at the example of a Gaussian laser beam that the proposed quantum-clock interferometers are stable against perturbations from varying optical fields.
  arXiv  Detail & Related papers  (2023-09-25T18:00:03Z)
• Efficient detection of multidimensional single-photon time-bin superpositions [0.0]
  We show that multidimensional time-bin superpositions can be detected using a single time-resolved photon detector. We discuss the possible applications in quantum communication, quantum information processing, and time-frequency quantum state tomography.
  arXiv  Detail & Related papers  (2023-08-10T12:05:08Z)
• Frequency-tunable microwave quantum light source based on superconducting quantum circuits [6.7579902550023245]
  A non-classical light source is essential for implementing a wide range of quantum information processing protocols. In the microwave regime, propagating photonic qubits serve as building blocks of large-scale quantum computers. Here we demonstrate a microwave quantum light source based on superconducting quantum circuits that can generate propagating single photons.
  arXiv  Detail & Related papers  (2023-04-12T13:21:40Z)
• 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)
• Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
  We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
  arXiv  Detail & Related papers  (2022-03-28T19:37:08Z)
• Single photon emission from individual nanophotonic-integrated colloidal quantum dots [45.82374977939355]
  Solution processible colloidal quantum dots hold great promise for realizing single-photon sources embedded into scalable quantum technology platforms. We report on integrating individual colloidal core-shell quantum dots into a nanophotonic network that allows for excitation and efficient collection of single-photons via separate waveguide channels.
  arXiv  Detail & Related papers  (2021-04-23T22:14:17Z)
• 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)
• Generating Spatially Entangled Itinerant Photons with Waveguide Quantum Electrodynamics [43.53795072498062]
  In this work, we demonstrate the deterministic generation of such photons using superconducting transmon qubits that are directly coupled to a waveguide. We generate two-photon N00N states and show that the state and spatial entanglement of the emitted photons are tunable via the qubit frequencies.
  arXiv  Detail & Related papers  (2020-03-16T16:03:27Z)

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.