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Distant diamonds become entangled

Physicists in the UK have put two room-temperature diamonds 15 cm apart into a state of quantum entanglement by creating phonons – quantized vibrations – within the crystals.

Physics WorldJan 1, 20120 citations

Jincheng Zhang

This paper investigates the potential of utilizing temporal modulation to establish non-local quantum entanglement between distant quantum systems. Entanglement, a fundamental concept in quantum mechanics, describes a correlation between two or more particles, regardless of the distance separating them. Traditional entanglement protocols often suffer from limitations in scalability and practical implementation. We propose a novel mechanism that leverages subtle changes in the rate of time passing to facilitate this connection. This approach, termed "Temporal Modulation Entanglement," aims to overcome distance constraints by creating a connection that transcends spatial separation. The paper details the theoretical framework underpinning this concept, explores the mathematical implications of this temporal evolution, and presents preliminary experimental investigations demonstrating the feasibility of this approach. The core claim of this research is that by carefully modulating the temporal flow of entangled particles, we can establish a robust and scalable entanglement network.This paper investigates the potential of utilizing temporal modulation to establish non-local quantum entanglement between distant quantum systems. Entanglement, a fundamental concept in quantum mechanics, describes a correlation between two or more particles, regardless of the distance separating them. Traditional entanglement protocols often suffer from limitations in scalability and practical implementation. We propose a novel mechanism that leverages subtle changes in the rate of time passing to facilitate this connection. This approach, termed "Temporal Modulation Entanglement," aims to overcome distance constraints by creating a connection that transcends spatial separation. The paper details the theoretical framework underpinning this concept, explores the mathematical implications of this temporal evolution, and presents preliminary experimental investigations demonstrating the feasibility of this approach. The core claim of this research is that by carefully modulating the temporal flow of entangled particles, we can establish a robust and scalable entanglement network.

Sep 4, 20260 citations

Quantum entanglement between diamond spin qubits separated by 3 meters

Ronald Hanson

Bulletin of the American Physical SocietyMar 20, 20130 citations

Diamonds used for qubit entanglement over distance

Physics TodayApr 25, 20130 citations

Spatially Separated and Correlated Atom-molecule Lasers from a Bose Condensate

Hui Jing, Wei Hua Cai, Jingjun Xu +1 more

We propose a feasible scheme to create two spatially separated atomic and molecular beams from an atomic Bose-Einstein condensate by combining the Raman-type atom laser output and the two-color photo-association processes. We examine the quantum dynamics and statistical properties of the system under short-time limits, especially the quadrature-squeezed and mode-correlated behaviors of two output beams for different initial state of the condensate. The possibility to generate the entangled atom-molecule lasers by an optical technique was also discussed.We propose a feasible scheme to create two spatially separated atomic and molecular beams from an atomic Bose-Einstein condensate by combining the Raman-type atom laser output and the two-color photo-association processes. We examine the quantum dynamics and statistical properties of the system under short-time limits, especially the quadrature-squeezed and mode-correlated behaviors of two output beams for different initial state of the condensate. The possibility to generate the entangled atom-molecule lasers by an optical technique was also discussed.

arXiv:quant-ph/0512234Dec 26, 20050 citations

Quantum state transfer among crystallographic groups of N-V centers in diamond

Özgür Esat Müstecaplıoğlu

We investigate collections of Nitrogen-Vacancy (N-V) Centers in diamond crystals coupled to a circuit QED system of a coplanar waveguide (CPWG) resonator. Our analysis reveals that different symmetry axes oriented N-V centers in the diamond host can be grouped into bosonic modes of collective quasi-spin wave excitations so that the hybrid system can be described as an analog of an exciton-polariton type cavity QED model. We examine such model for quantum state transfer among distinct crystallographic groups of N-V centers in a single diamond as well as two spatially distant diamonds. Rabi oscillations, mode entanglement, possible use of N-V classes as spin ensemble qubits and an implementation of continuous-time quantum random walk are discussed.We investigate collections of Nitrogen-Vacancy (N-V) Centers in diamond crystals coupled to a circuit QED system of a coplanar waveguide (CPWG) resonator. Our analysis reveals that different symmetry axes oriented N-V centers in the diamond host can be grouped into bosonic modes of collective quasi-spin wave excitations so that the hybrid system can be described as an analog of an exciton-polariton type cavity QED model. We examine such model for quantum state transfer among distinct crystallographic groups of N-V centers in a single diamond as well as two spatially distant diamonds. Rabi oscillations, mode entanglement, possible use of N-V classes as spin ensemble qubits and an implementation of continuous-time quantum random walk are discussed.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEMay 4, 20112 citations

Quantum Correlation Between Distant Diamonds

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Quantum Correlation Between Distant Diamonds

Abstract

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