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We investigate the modification of the spontaneous emission dynamics and external quantum efficiency for self-assembled InGaAs quantum dots coupled to extended and localised photonic states in GaAs 2D-photonic crystals. The 2D-photonic…

Materials Science · Physics 2009-11-13 M. Kaniber , A. Kress , M. Bichler , R. Meyer , M. -C. Amann , J. J. Finley

The recent progress in integrated quantum optics has set the stage for the development of an integrated platform for quantum information processing with photons, with potential applications in quantum simulation. Among the different…

Mesoscale and Nanoscale Physics · Physics 2016-08-02 Christof P. Dietrich , Andrea Fiore , Mark G. Thompson , Martin Kamp , Sven Höfling

Fault tolerant on-chip photonic quantum computation is enormously helped by (a) deterministic generation of the needed thousands to millions of photon qubits from (b) quantum emitters in designed spatially ordered arrays to enable networks…

Quantum Physics · Physics 2024-11-12 Qi Huang , Swarnabha Chattaraj , Lucas Jordao , Jiefei Zhang , Siyuan Lu , Anupam Madhukar

The integration of second-order optical nonlinearities into scalable photonic platforms remains a key challenge due to their large sensitivity to fabrication variations. Here, we present a scalable quadratic nonlinear platform that…

Hereby, we present results of finite-difference time-domain simulations of technologically undemanding photonic structures offering a significant improvement in the spectrally broad extraction efficiency of emission from a quantum emitter…

Mesoscale and Nanoscale Physics · Physics 2019-05-01 Paweł Mrowiński , Grzegorz Sęk

GaAs-based nanowires hosting active quantum heterostructures provide a promising route toward monolithic integration of single-photon sources on silicon, a key requirement for scalable quantum photonics. However, ultrathin axial…

Photonics offers unique advantages as a substrate for quantum information processing, but imposes fundamental scalability challenges. Nondeterministic schemes impose massive resource overheads, while deterministic schemes require…

Quantum Physics · Physics 2021-12-02 Ben Bartlett , Avik Dutt , Shanhui Fan

Silicon photonics is a leading platform for realizing the vast numbers of physical qubits needed for useful quantum information processing because it leverages mature complementary metal-oxide-semiconductor (CMOS) manufacturing to integrate…

An outstanding goal in quantum optics and scalable photonic quantum technology is to develop a source that each time emits one and only one entangled photon pair with simultaneously high entanglement fidelity, extraction efficiency, and…

A long standing obstacle to realizing highly sought on-chip monolithic solid state quantum optical circuits has been the lack of a starting platform comprising buried (protected) scalable spatially ordered and spectrally uniform arrays of…

Applied Physics · Physics 2020-06-03 Jiefei Zhang , Swarnabha Chattaraj , Qi Huang , Lucas Jordao , Siyuan Lu , Anupam Madhukar

Quantum dot light-emitting diodes (QLEDs) are promising building blocks for prospective lighting and display applications. Despite the significant advancements achieved towards increasing the efficiency and brightness levels of QLEDs, the…

Single-photon sources based on optical parametric processes have been used extensively for quantum information applications due to their flexibility, room-temperature operation and potential for photonic integration. However, the…

Quantum Physics · Physics 2018-02-28 Chaitali Joshi , Alessandro Farsi , Stéphane Clemmen , Sven Ramelow , Alexander L. Gaeta

In the second part of our series on integrated photonic spectrographs for astronomy, we present theoretical and experimental results on the design, simulation and characterization of custom-manufactured silica-on-silicon Arrayed Waveguide…

Instrumentation and Methods for Astrophysics · Physics 2021-10-15 Andreas Stoll , Kalaga Madhav , Martin Roth

Self-assembled InAs quantum dots (QDs) are promising optomechanical elements due to their excellent photonic properties and sensitivity to local strain fields. Microwave-frequency modulation of photons scattered from these efficient quantum…

Quantum dots (QDs) made from semiconductors are among the most promising platforms for the developments of quantum computing and simulation chips, and have advantages over other platforms in high density integration and in compatibility to…

Mesoscale and Nanoscale Physics · Physics 2022-08-22 Jingwei Mu , Shaoyun Huang , Zhi-Hai Liu , Weijie Li , Ji-Yin Wang , Dong Pan , Guang-Yao Huang , Yuanjie Chen , Jianhua Zhao , H. Q. Xu

The ability of hexagonal boron nitride to host quantum emitters in the form of deep-level color centers makes it an important material for quantum photonic applications. This work utilizes a monolithic circular Bragg grating device to…

Applied Physics · Physics 2023-09-27 Lesley Spencer , Jake Horder , Sejeong Kim , Milos Toth , Igor Aharonovich

High-dimensional quantum entanglement is an important resource for emerging quantum technologies such as quantum communication and quantum computation. The scalability of metres-long experimental setups limits high-dimensional entanglement…

Quantum Physics · Physics 2024-09-06 Tavshabad Kaur , Daniel Peace , Jacquiline Romero

Coherent diffractive imaging (CDI), using both X-rays and electrons, has made extremely rapid progress over the past two decades. The associated reconstruction algorithms are typically iterative, and seeded with a crude first estimate. A…

Image and Video Processing · Electrical Eng. & Systems 2019-06-25 Konstantin M. Pavlov , Kaye S. Morgan , Vasily I. Punegov , David M. Paganin

We investigate the possibility to achieve scalable photonic quantum computing by the giant optical circular birefringence induced by a quantum-dot spin in a double-sided optical microcavity as a result of cavity quantum electrodynamics. We…

Quantum Physics · Physics 2013-07-19 Hai-Rui Wei , Fu-Guo Deng

Single-photon emitters (SPEs) constitute a foundational resource for quantum technologies, including secure communication, photonic quantum computing, and emerging quantum network architectures. A wide range of quantum materials, from…