Entanglement generation via diffraction

Goldberg, Aaron Z.; James, Daniel F. V.

doi:10.1103/physreva.100.042332

Cited by 7 publications

(5 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To facilitate the application of the resolvent theory, we should transform the systems ( 22) and (23) in the following way. Relation ( 23) is equivalent to…”

Section: Quantum Noise and Commutation Relationsmentioning

confidence: 99%

See 1 more Smart Citation

Super-Operator Linear Equations and Their Applications to Quantum Antennas and Quantum Light Scattering

Slepyan

Boag

2022

Applied Sciences

View full text Add to dashboard Cite

In this paper, we develop a resolvent method for super-operator equations with applications in quantum optics. Our approach is based on the novel concept of a linear super-operator acting on the Hilbert subspace of vector or scalar linear operators satisfying physically reasonable commutation relations. The super-operator equations for the electromagnetic (EM) field operators are formulated for the problems of quantum antenna emission and quantum light scattering by a dielectric body. The general solution of super-operator equation is presented in terms of the classical resolvent. In contrast to the classical case, it includes the ancillary components associated with the quantum noise even in the absence of absorption. The reason for this lies in the energy exchange between different spatial regions with various bases for the field presentation (which looks like losses or gain from the point of view of the correspondent region). A number of examples (a two-element dipole antenna, a plane dielectric layer, and a dielectric cylinder with a circular cross section) which demonstrate the physical mechanism of the appearance of noise are considered. It is shown that antenna emission or scattering transforms the coherent properties of quantum light. This leads to a new way of controlling coherence in a direction-dependent manner, a feature that can be useful in various applications of quantum technologies, including quantum radars and lidars, and quantum antennas.

show abstract

“…To facilitate the application of the resolvent theory, we should transform the systems ( 22) and (23) in the following way. Relation ( 23) is equivalent to…”

Section: Quantum Noise and Commutation Relationsmentioning

confidence: 99%

“…As a parallel method of development, one can mention high-frequency physical diffraction theories (for example, quantum diffraction by apertures [22,23]) and their comparison with the physics of simple quantum-optical devices (beam-splitters, interferometers, etc. [24]).…”

Section: Introductionmentioning

confidence: 99%

Super-Operator Linear Equations and Their Applications to Quantum Antennas and Quantum Light Scattering

Slepyan

Boag

2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Hence, exploring effective and practical schemes for entanglement generation, improvement, and protection in open quantum systems is important for applying quantum entanglement and developing quantum technology. In recent decades, numerous protocols [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] have been proposed to generate and enhance quantum entanglement. For example, in refs.…”

Section: Introductionmentioning

confidence: 99%

Improving Entanglement Generation Using the Coherence of a Nonthermal Reservoir

Man

Xia

2023

Adv Quantum Tech

View full text Add to dashboard Cite

The effect of environmental coherence on bipartite and tripartite quantum entanglements using quantum collision models is studied. In the collision model, an open quantum system of two qubits indirectly interacts with the reservoir via auxiliary qubits. The reservoir is modeled as a collection of initially uncorrelated qubits prepared in an identically nonthermal state. It is shown that the coherence of the nonthermal reservoir contributes to the generation and protection of entanglement. It is found that adding coherence to the initial state of the reservoir qubit can significantly enhance the steady-state entanglement of the system, and the presence of coherence in the reservoir allows steady-state entanglement to be obtained in a higher temperature region.

show abstract

“…Entanglement, apart from playing a crucial conceptual role in quantum mechanics [1,2], is widely considered a resource for quantum technologies since it enables various genuinely quantum protocols [3,4]. Accordingly, the study of suitable protocols to generate entangled states in a great variety of physical setups has attracted much attention in the last decades [5][6][7][8][9][10][11][12][13][14][15][16]. However, generating quantum states with a certain amount of entanglement usually requires converting other resources into it, such as coherence [17,18], non-equilibrium thermal resources [18], and energy [19].…”

Section: Introductionmentioning

confidence: 99%

“…Protocols to generate entangled states typically exploit unitary processes [12,13,15] and, possibly, measurements [12,14,16]. On the other hand, dissipative processes have been also identified as possible sources of entangled states, e.g, when the steady states of the dissipative dynamics are entangled [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Generation of minimum energy entangled states

Piccione,

Militello,

Napoli

et al. 2020

Preprint

View full text Add to dashboard Cite

Entanglement generation via diffraction

Cited by 7 publications

References 63 publications

Super-Operator Linear Equations and Their Applications to Quantum Antennas and Quantum Light Scattering

Super-Operator Linear Equations and Their Applications to Quantum Antennas and Quantum Light Scattering

Improving Entanglement Generation Using the Coherence of a Nonthermal Reservoir

Generation of minimum energy entangled states

Contact Info

Product

Resources

About