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The cascaded decay in a four-level quantum emitter is a well established mechanism to generate polarization entangled photon pairs, the building blocks of many applications in quantum technologies. The four most prominent maximally…

We describe a method for generating entanglement between two spatially separated dipoles coupled to optical micro-cavities. The protocol works even when the dipoles have different resonant frequencies and radiative lifetimes. This method is…

Quantum Physics · Physics 2009-11-13 Deepak Sridharan , Edo Waks

Based on two-photon exchange interaction between $n$ coupled optical cavities each of them containing a single three level atom, the $n$-qubit and $n$-photonic state transfer is investigated. In fact, following the approach of…

Quantum Physics · Physics 2013-03-18 R. Sufiani , A. Darkhosh

Entanglement between large numbers of quantum modes is the quintessential resource for future technologies such as the quantum internet. Conventionally the generation of multimode entanglement in optics requires complex layouts of…

While artificially fabricated patterned metasurfaces are providing paradigm-shifting optical components for classical light manipulation, strongly interacting, controllable, and deterministic quantum interfaces between light and matter in…

Atomic Physics · Physics 2022-01-14 K. E. Ballantine , J. Ruostekoski

Recent advances in quantum technologies are rapidly stimulating the building of quantum networks. With the parallel development of multiple physical platforms and different types of encodings, a challenge for present and future networks is…

Quantum Physics · Physics 2021-04-14 G. Guccione , T. Darras , H. Le Jeannic , V. B. Verma , S. W. Nam , A. Cavaillès , J. Laurat

We propose a complete architecture for deterministic generation of entangled multiphoton states. Our approach utilizes periodic driving of a quantum-dot emitter and an efficient light-matter interface enabled by a photonic crystal…

Current photon entangling schemes require resources that grow with the photon number. We present a new approach that generates quantum entanglement between many photons, using only a single source of entangled photon pairs. The different…

Quantum Physics · Physics 2014-02-04 E. Megidish , T. Shacham , A. Halevy , L. Dovrat , H. S. Eisenberg

We propose an efficient microwave-photonic modulator as a resource for stationary entangled microwave-optical fields and develop the theory for deterministic entanglement generation and quantum state transfer in multi-resonant electro-optic…

Quantum Physics · Physics 2019-12-03 Alfredo Rueda , William Hease , Shabir Barzanjeh , Johannes M. Fink

On-chip quantum sources based on nonlinear processes are pivotal components in integrated photonics, driving significant advancements in quantum information technologies over recent decades. Usually, the pump coherence has been considered…

In the framework of the paraxial and of the slowly varying envelope approximations, with reference to a normally dispersive medium or to vacuum, the electromagnetic field is given as a continuous quantum superposition of non-dispersive and…

Quantum Physics · Physics 2016-06-14 Claudio Conti

Generating usable output-entanglement in continuous variable systems can serve as a viable resource for improving applications in quantum information science. In this work, we show how to generate steady-state output-entanglement in a…

Generating entanglement between distributed network nodes is a prerequisite for the quantum internet. Entanglement distribution protocols based on high-dimensional photonic qudits enable the simultaneous generation of multiple entangled…

Quantum Physics · Physics 2024-01-15 Xiaoyu Liu , Niv Bharos , Liubov Markovich , Johannes Borregaard

The future of integrated quantum photonics relies heavily on the ability to engineer refined methods for preparing the quantum states needed to implement various quantum protocols. An important example of such states are quantum-correlated…

Quantum Physics · Physics 2018-02-28 Jesper B. Christensen , Jacob G. Koefoed , Karsten Rottwitt , Colin. J. McKinstrie

We theoretically investigate strategies for the deterministic creation of trains of time-bin entangled photons using an individual quantum emitter described by a $\Lambda$-type electronic system. We explicitly demonstrate the theoretical…

Quantum Physics · Physics 2024-11-27 David Bauch , Nikolas Köcher , Nils Heinisch , Stefan Schumacher

Multi-photon entangled states of light are key to advancing quantum communication, computation, and metrology. Current methods for building such states are based on stitching together photons from probabilistic sources. The probability of…

We consider novel method for implementation of hybrid entanglement between microscopic and macroscopic states on output of spontaneous parametric down converter through the depletion of the pump wave. The generated signal, idler and pumping…

Quantum Physics · Physics 2017-08-23 Sergey A. Podoshvedov

Efficient generation of large-scale multipartite entangled states is a critical but challenging task in quantum information processing. Although generation of multipartite entanglement within a small set of individual qubits has been…

Quantum Physics · Physics 2025-10-14 Jixuan Shi , Sheng Zhang , Yukai Wu , Yuedong Sun , Yibo Liang , Hai Wang , Yunfei Pu , Luming Duan

We demonstrate entanglement generation of two neutral atoms trapped inside an optical cavity. Entanglement is created from initially separable two-atom states through carving with weak photon pulses reflected from the cavity. A polarization…

Quantum Physics · Physics 2017-05-30 Stephan Welte , Bastian Hacker , Severin Daiss , Stephan Ritter , Gerhard Rempe

We investigate the coupling between an ensemble of individual emitters and multiple photons in a high-$Q$ cavity at the mesoscopic excitation level. The master equation theory is used to calculate the emission spectrum of the cavity QED…

Mesoscale and Nanoscale Physics · Physics 2025-01-14 Chenjiang Qian , Viviana Villafañe , Pedro Soubelet , Andreas V. Stier , Jonathan J. Finley
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