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We propose a cavity-QED scheme for the controlled generation of sequences of entangled single-photon wavepackets. A photon is created inside a cavity via an active medium, such as an atom, and decays into the continuum of radiation modes…

Quantum Physics · Physics 2009-10-31 K. M. Gheri , C. Saavedra , P. Toermae , J. I. Cirac , P. Zoller

A potential scheme is proposed to generate complete sets of entangled photons in the context of cavity quantum electrodynamics (QED). The scheme includes twice interactions of atoms with cavities, in which the first interaction is made in…

Quantum Physics · Physics 2007-05-23 X. L. Zhang , M. Feng , K. L. Gao

Time-frequency entangled photons constitute an important resource for a plethora of applications across the diverse quantum technology landscape. Thus, efficient and tunable setups for the generation of entangled photons are requisite for…

Quantum Physics · Physics 2022-11-30 Eugene Stolyarov

The cascaded biphoton state generated from a cold atomic ensemble presents one of the strongly correlated resources that can preserve and relay quantum information. Under the four-wave mixing condition, the emitted signal and idler photons…

Quantum Physics · Physics 2021-11-18 Y. -E Wong , N. -Y. Tsai , W. S. Hiew , H. H. Jen

The cascade-emitted biphotons generated from the alkali metal atomic ensembles are an excellent entanglement resource which enables long-distance quantum communication. The communication of quantum information between distant locations can…

Quantum Physics · Physics 2022-06-15 Y. -E. Wong , T. H. Chang , H. H. Jen

Parametrically driving an optical cavity that simultaneously couples to an atomic ensemble quantum memory enables in-situ generation of multimode photon-memory entanglement. A high-rate bi-party photon-memory entanglement can be generated…

Quantum Physics · Physics 2024-10-17 Hoi-Kwan Lau , Hong Qiao , Aashish A. Clerk , Tian Zhong

Entanglement plays a crucial role in the development of quantum-enabled devices. One significant objective is the deterministic creation and distribution of entangled states, achieved, for example, through a mechanical oscillator…

We present a formal theory of single quantum-dot coupling to a planar photonic crystal that supports quasi-degenerate cavity modes, and use this theory to describe, and optimize, entangled-photon-pair generation via the biexciton-exciton…

Other Condensed Matter · Physics 2015-05-13 P. K. Pathak , S. Hughes

We theoretically investigate polarization-entangled photon generation by using a semiconductor quantum dot embedded in a microcavity. The entangled states can be produced by the application of two cross-circularly polarized laser fields.…

Hereby, we study the generation of pairs of polarization-entangled photons at telecom C-band by biexciton-exciton cascade from non-resonantly excited epitaxial InAs/InP quantum dots (QDs). It is realized without external tuning of the fine…

Quantum entanglement is an integral part of quantum optics and has been exploited in areas such as computation, cryptography and metrology. The entanglement between photons can be present in various degrees of freedom (DOFs), and even the…

We discuss a cavity-QED scheme to deterministically generate entangled photons pairs by using a three-level atom successively coupled to two single longitudinal mode high-Q cavities presenting polarization degeneracy. The first cavity is…

Quantum Physics · Physics 2015-06-26 R. Garcia-Maraver , K. Eckert , R. Corbalan , J. Mompart

We demonstrate theoretically the feasibility of correlated entangled photon-pair generation with vanishing threshold in a bimodal cavity setup that uses a single V-type three level atom pumped by dual incoherent sources and driven by two…

Quantum Physics · Physics 2023-06-07 Anushree Dey , Arpita Pal , Subhasish Dutta Gupta , Bimalendu Deb

The generation and control of entanglement in a quantum mechanical system is a critical element of nearly all quantum applications. Molecular systems are a promising candidate, with numerous degrees of freedom able to be targeted. However,…

Quantum Physics · Physics 2023-07-28 Davis M. Welakuh , Spyros Tserkis , Scott E. Smart , Prineha Narang

We theoretically study the polarization entanglement of photons generated by the biexciton cascade in a GaAs/InAs semiconductor quantum dot (QD), located in a nano cavity. A detailed analysis of the complex interplay between photon- and…

Mesoscale and Nanoscale Physics · Physics 2013-10-25 A. Carmele , F. Milde , M. -R. Dachner , M. Bagheri Harouni , R. Rokniknizadeh , M. Richter , A. Knorr

Semiconductor quantum light sources are favorable for a wide range of quantum photonic tasks, particularly quantum computing and quantum information processing. Here we theoretically investigate the properties of quantum emitters (QEs) as a…

Quantum Physics · Physics 2024-05-29 Kobra N. Avanaki , George C. Schatz

The generation of entangled photons from radiative cascades has enabled milestone experiments in quantum information science with several applications in photonic quantum technologies. Significant efforts are being devoted to pushing the…

We demonstrate the generation of photons within a fiber-cavity quantum memory, followed by later on-demand readout. Signal photons are generated by spontaneous four-wave mixing in a fiber cavity comprising a birefringent fiber with dichroic…

We numerically investigate the generation and dynamics of tripartite entanglement among qubits (quantum emitters or atoms) in multimode cavity quantum electrodynamics (cQED). Our cQED architecture features three initially unentangled…

We study the sequential generation of entangled photonic and atomic multi-qubit states in the realm of cavity QED. We extend the work of C. Schoen et al. [Phys. Rev. Lett. 95, 110503 (2005)], where it was shown that all states generated in…

Quantum Physics · Physics 2007-05-23 C. Schoen , K. Hammerer , M. M. Wolf , J. I. Cirac , E. Solano
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