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Using quantum optics to process data could herald a new era of information technology. With the latest semiconductor source of photons, researchers are paving the way towards this enticing goal. QUANTUM OPTICS

Markus Aspelmeyer

Published Jan 1, 2007• 0 citations
OpenAlex

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At present, the human society is stepping into the era of the interconnection of everything, every moment there are massive data needs to be transmitted and processed. With the massive growth of data information, people put forward a higher demand for the information processing ability of network, so the photon information processing technology was put forward. Photonic information processing technology refers to the technology of processing optical information directly in the optical domain. It breaks through the bottleneck of bandwidth and rate of traditional electrical information processing, and has become a solution of ultra-high speed information processing. In addition, the latest technology makes quantum information processing technology possible, which provides a promising platform for applications and research in a variety of contexts. This paper begins with photon generation and transitions from photon information processing technology to quantum information processing technology. The purpose of this paper is to provide the reader with a comprehensive review of the field, showing a balance between theoretical and experimental technical results.

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In the last two decades, many quantum optics experiments have demonstrated small-scale quantum information processing applications with several photons. Beyond such proof-of-principle demonstrations, efficient preparation of large, but definite, numbers of photons is of great importance for further scaling up and speeding up photonic quantum information processing. Typical single-photon generation techniques based on nonlinear parametric processes face challenges of probabilistic generation. Here we demonstrate efficient synchronization of photons from multiple nonlinear parametric heralded single-photon sources (HSPSs), using quantum memories (QMs). Our low-loss optical memories greatly enhance (~30x) the generation rate of coincidence photons from two independent HSPSs, while maintaining high indistinguishability (95.7%) of the synchronized photons. As an application, we perform the first demonstration of HSPS-based measurement-device-independent quantum key distribution (MDI-QKD). The synchronized HSPSs demonstrated here will pave the way toward efficient quantum communication and larger scale optical quantum computing.

arXiv:1704.00879•Optica•Aug 24, 2017•117 citations
At present, the human society is stepping into the era of the interconnection of everything, every moment there are massive data needs to be transmitted and processed. With the massive growth of data information, people put forward a higher demand for the information processing ability of network, so the photon information processing technology was put forward. Photonic information processing technology refers to the technology of processing optical information directly in the optical domain. It breaks through the bottleneck of bandwidth and rate of traditional electrical information processing, and has become a solution of ultra-high speed information processing. In addition, the latest technology makes quantum information processing technology possible, which provides a promising platform for applications and research in a variety of contexts. This paper begins with photon generation and transitions from photon information processing technology to quantum information processing technology. The purpose of this paper is to provide the reader with a comprehensive review of the field, showing a balance between theoretical and experimental technical results.
The major barrier for optical quantum information technologies is the absence of reliable single photons sources providing non-classical light states on demand which can be easily and reliably integrated with standard processing protocols for quantum device fabrication. New methods of generation at room temperature of single photons are therefore needed. Heralded single photon sources are presently being sought based on different methods built on different materials. Silicon Carbide (SiC) has the potentials to serve as the preferred material for quantum applications. Here, we review the latest advances in single photon generation at room temperatures based on SiC.
In the last two decades, many quantum optics experiments have demonstrated small-scale quantum information processing applications with several photons. Beyond such proof-of-principle demonstrations, efficient preparation of large, but definite, numbers of photons is of great importance for further scaling up and speeding up photonic quantum information processing. Typical single-photon generation techniques based on nonlinear parametric processes face challenges of probabilistic generation. Here we demonstrate efficient synchronization of photons from multiple nonlinear parametric heralded single-photon sources (HSPSs), using quantum memories (QMs). Our low-loss optical memories greatly enhance (~30x) the generation rate of coincidence photons from two independent HSPSs, while maintaining high indistinguishability (95.7%) of the synchronized photons. As an application, we perform the first demonstration of HSPS-based measurement-device-independent quantum key distribution (MDI-QKD). The synchronized HSPSs demonstrated here will pave the way toward efficient quantum communication and larger scale optical quantum computing.