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Preparing and observing quantum states of nanoscale particles is a challenging task with great relevance for quantum technologies and tests of fundamental physics. In contrast to atomic systems with discrete transitions, nanoparticles…

Quantum Physics · Physics 2020-12-23 Lukas Martinetz , Klaus Hornberger , James Millen , M. S. Kim , Benjamin A. Stickler

We describe a new approach to spin squeezing based on a double-pass Faraday interaction between an optical probe and an optically dense atomic sample. A quantum eraser is used to remove residual spin-probe entanglement, thereby realizing a…

Quantum Physics · Physics 2013-05-29 Collin M. Trail , Poul S. Jessen , Ivan H. Deutsch

The entanglement distribution network connects remote users through sharing entanglement resources, which is essential for realizing quantum internet. We proposed a controllable entanglement distribution network (c-EDN) based on a silicon…

Quantum Physics · Physics 2022-07-25 Dongning Liu , Jingyuan Liu , Xiaosong Ren , Xue Feng , Fang Liu , Kaiyu Cui , Yidong Huang , Wei Zhang

Controlling photon emission by single quantum emitters with nanostructures is crucial for scalable on-chip quantum information processing. Nowadays nanoresonators can affect the lifetime of emitters and ultimately induce strong coupling…

Quantum Physics · Physics 2014-11-26 B. le Feber , N. Rotenberg , L. Kuipers

Semiconductor quantum dots (known as artificial atoms) hold great promise for solid-state quantum networks and quantum computers. To realize a quantum network, it is crucial to achieve light-matter entanglement and coherent quantum-state…

Quantum Physics · Physics 2009-01-27 C. Y. Hu , W. J. Munro , J. L. O'Brien , J. G. Rarity

In recent years the controlled coupling of single photon emitters to propagating surface plasmons has been intensely studied, which is fueled by the prospect of a giant photonic non-linearity on a nano-scaled platform. In this article we…

Quantum Physics · Physics 2016-04-05 Alexander Huck , Ulrik L. Andersen

The goal of integrated quantum photonics is to combine components for the generation, manipulation, and detection of non-classical light in a phase stable and efficient platform. Solid-state quantum emitters have recently reached…

Applied Physics · Physics 2020-04-07 Je-Hyung Kim , Shahriar Aghaeimeibodi , Jacques Carolan , Dirk Englund , Edo Waks

Coupled microwave photon-magnon hybrid systems offer promising applications by harnessing various magnon physics. At present, in order to realize high coupling strength between the two subsystems, bulky ferromagnets with large spin numbers…

Mesoscale and Nanoscale Physics · Physics 2020-05-20 Justin T. Hou , Luqiao Liu

Quantum systems combining indistinguishable photon generation and spin-based quantum information processing are essential for remote quantum applications and networking. However, identification of suitable systems in scalable platforms…

The realization of a quantum interface between a propagating photon used for transmission of quantum information, and a stationary qubit used for storage and manipulation, has long been an outstanding goal in quantum information science. A…

Quantum Physics · Physics 2015-06-16 Wei-bo Gao , P. Fallahi , E. Togan , A. Delteil , Y. S. Chin , J. Miguel-Sanchez , A. Imamoglu

We present two novel schemes to generate photon polarization entanglement via single electron spins confined in charged quantum dots inside microcavities. One scheme is via entangled remote electron spins followed by negatively-charged…

Quantum Physics · Physics 2010-05-31 C. Y. Hu , W. J. Munro , J. G. Rarity

Quantum amplification is recognized as a key resource for precision measurements. However, most conventional paradigms employ an ensemble of independent particles that usually limit the performance of quantum amplification in gain, spectral…

Quantum Physics · Physics 2023-09-21 Minxiang Xu , Min Jiang , Yuanhong Wang , Haowen Su , Ying Huang , Xinhua Peng

The efficiency of photo-conductive switches, which continue to be used for the generation and detection of THz waves, has been overlooked for a long time. The so far 'optics-dominated' devices are making their way through to new and…

Applied Physics · Physics 2020-11-10 Giorgos Georgiou , Clément Geffroy , Christopher Bäuerle , Jean-François Roux

The interplay of optical driving and hyperfine interaction between an electron confined in a quantum dot and its surrounding nuclear spin environment produces a range of interesting physics such as mode-locking. In this work, we go beyond…

Mesoscale and Nanoscale Physics · Physics 2024-03-12 Arian Vezvaee , Gargee Sharma , Sophia E. Economou , Edwin Barnes

The hybrid quantum network, a universal form of quantum network which is aimed for quantum communication and distributed quantum computation, is that the quantum nodes in it are realized with different physical systems. This universal form…

Spin qubits in silicon and germanium quantum dots are promising platforms for quantum computing, but entangling spin qubits over micrometer distances remains a critical challenge. Current prototypical architectures maximize transversal…

Mesoscale and Nanoscale Physics · Physics 2022-08-08 Stefano Bosco , Pasquale Scarlino , Jelena Klinovaja , Daniel Loss

Two-dimensional photonic crystal membranes provide a versatile planar architecture for integrated photonics to control the propagation of light on a chip employing high quality optical cavities, waveguides, beamsplitters or dispersive…

We propose a scheme for scalable photonic quantum computation based on cavity assisted interaction between single-photon pulses. The prototypical quantum controlled phase-flip gate between the single-photon pulses is achieved by…

Quantum Physics · Physics 2016-09-08 L. -M. Duan , H. J. Kimble

Self-organized semiconductor quantum dots represent almost ideal two-level systems, which have strong potential to applications in photonic quantum technologies. For instance, they can act as emitters in close-to-ideal quantum light…

Integrated photonics offers great potential for quantum communication devices in terms of complexity, robustness and scalability. Silicon photonics in particular is a leading platform for quantum photonic technologies, with further benefits…