Climbing the Fock ladder: Advancing multiphoton state generation
- URL: http://arxiv.org/abs/2105.03720v1
- Date: Sat, 8 May 2021 15:38:56 GMT
- Title: Climbing the Fock ladder: Advancing multiphoton state generation
- Authors: M. Engelkemeier, J. Sperling, J. Tiedau, S. Barkhofen, I. Dhand, M. B.
Plenio, B. Brecht, and C. Silberhorn
- Abstract summary: A scheme for the enhanced generation of higher photon-number states is realized, using an optical time-multiplexing setting.
We use a quantum feedback mechanism for already generated photons to induce self-seeding of the consecutive nonlinear process.
We compare the fidelities and success probabilities of our protocol with the common direct heralding of photon-number states.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A scheme for the enhanced generation of higher photon-number states is
realized, using an optical time-multiplexing setting that exploits a parametric
down-conversion source for an iterative state generation. We use a quantum
feedback mechanism for already generated photons to induce self-seeding of the
consecutive nonlinear process, enabling us to coherently add photons to the
light that propagates in the feedback loop. The addition can be carried out for
any chosen number of round trips, resulting in a successive buildup of
multiphoton states. Our system is only limited by loop losses. The looped
design is rendered possible by a carefully engineered waveguide source that is
compatible with and preserves the shape of the propagating mode. We compare the
fidelities and success probabilities of our protocol with the common direct
heralding of photon-number states. This comparison reveals that, for same the
fidelity, our feedback-based setup significantly enhances success
probabilities, being vital for an efficient utilization in quantum
technologies. Moreover, quantum characteristics of the produced states are
analyzed, and the flexibility of producing higher photon-number states with our
setup beyond the common direct heralding is demonstrated.
Related papers
- 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) - Generation and characterization of polarization-entangled states using
quantum dot single-photon sources [0.0]
Single-photon sources based on semiconductor quantum dots find several applications in quantum information processing.
We implement this approach via a simple and compact design that generates entangled photon pairs in the polarization degree of freedom.
Our source shows long-term stability and high quality of the generated entangled states, thus constituting a reliable building block for optical quantum technologies.
arXiv Detail & Related papers (2023-08-04T16:07:12Z) - Experimental realization of deterministic and selective photon addition
in a bosonic mode assisted by an ancillary qubit [50.591267188664666]
Bosonic quantum error correcting codes are primarily designed to protect against single-photon loss.
Error correction requires a recovery operation that maps the error states -- which have opposite parity -- back onto the code states.
Here, we realize a collection of photon-number-selective, simultaneous photon addition operations on a bosonic mode.
arXiv Detail & Related papers (2022-12-22T23:32:21Z) - 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) - Generation of time-frequency entangled photon pairs propagating in
separate waveguides in circuit QED setup [0.0]
We propose a generic cavity QED setup designed for on-demand generation of time-frequency entangled photon pairs.
We numerically solve the set of equations of motion governing the evolution of the quantum state of the system.
We compute the entanglement entropy analyzing its dependence on the system parameters.
arXiv Detail & Related papers (2022-07-17T21:09:44Z) - Complete conversion between one and two photons in nonlinear waveguides
with tailored dispersion [62.997667081978825]
We show theoretically how to control coherent conversion between a narrow-band pump photon and broadband photon pairs in nonlinear optical waveguides.
We reveal that complete deterministic conversion as well as pump-photon revival can be achieved at a finite propagation distance.
arXiv Detail & Related papers (2021-10-06T23:49:44Z) - Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide.
We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
arXiv Detail & Related papers (2021-06-14T13:39:46Z) - Tunable Anderson Localization of Dark States [146.2730735143614]
We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system.
We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes.
The experiment opens the door to the study of various localization phenomena on a new platform.
arXiv Detail & Related papers (2021-05-25T07:52:52Z) - Generation of Photonic Matrix Product States with Rydberg Atomic Arrays [63.62764375279861]
We show how one can deterministically generate photonic matrix product states with high bond and physical dimensions with an atomic array.
We develop a quantum gate and an optimal control approach to universally control the system and analyze the photon retrieval efficiency of atomic arrays.
arXiv Detail & Related papers (2020-11-08T07:59:55Z) - Engineering continuous and discrete variable quantum vortex states by
nonlocal photon subtraction in a reconfigurable photonic chip [0.0]
We study the production of entangled two- and N-mode quantum states of light in optical waveguides.
We propose a quantum photonic circuit that produces a reconfigurable superposition of photon subtraction on two single-mode squeezed states.
arXiv Detail & Related papers (2020-04-11T11:11:16Z) - Quantum photonics with active feedback loops [0.0]
We develop a unified theoretical framework for the efficient description of multiphoton states generated and propagating in loop-based optical networks.
We provide exact expressions for fidelities with target states, success probabilities of heralding-type measurements, and correlations between optical modes.
arXiv Detail & Related papers (2020-02-19T13:07:46Z)
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.