Towards long distance entanglement between a photon and a solid-state multimode quantum memory (Conference Presentation)

2020 ◽  
Author(s):  
Jelena Rakonjac ◽  
Dario Lago-Rivera ◽  
Samuele Grandi ◽  
Alessandro Seri ◽  
Hugues de Riedmatten
Keyword(s):  
Solid State ◽  
Quantum Memory ◽  
Long Distance

scholarly journals A single-photon switch and transistor enabled by a solid-state quantum memory

Science ◽  
2018 ◽  
Vol 361 (6397) ◽  
pp. 57-60 ◽  
Author(s):  
Shuo Sun ◽  
Hyochul Kim ◽  
Zhouchen Luo ◽  
Glenn S. Solomon ◽  
Edo Waks
Keyword(s):  
Solid State ◽  
Quantum Information Processing ◽  
Single Photon ◽  
Internal State ◽  
Optical Signal ◽  
Quantum Memory ◽  
Strong Interactions ◽  
Strongly Coupled ◽  
Spin Qubit ◽  
Photon Interactions

Single-photon switches and transistors generate strong photon-photon interactions that are essential for quantum circuits and networks. However, the deterministic control of an optical signal with a single photon requires strong interactions with a quantum memory, which has been challenging to achieve in a solid-state platform. We demonstrate a single-photon switch and transistor enabled by a solid-state quantum memory. Our device consists of a semiconductor spin qubit strongly coupled to a nanophotonic cavity. The spin qubit enables a single 63-picosecond gate photon to switch a signal field containing up to an average of 27.7 photons before the internal state of the device resets. Our results show that semiconductor nanophotonic devices can produce strong and controlled photon-photon interactions that could enable high-bandwidth photonic quantum information processing.

scholarly journals Time Entanglement between a Photon and a Spin Wave in a Multimode Solid-State Quantum Memory

2019 ◽  
Vol 123 (3) ◽  
Author(s):  
Kutlu Kutluer ◽  
Emanuele Distante ◽  
Bernardo Casabone ◽  
Stefano Duranti ◽  
Margherita Mazzera ◽  
...  
Keyword(s):  
Solid State ◽  
Spin Wave ◽  
Quantum Memory

scholarly journals A hybrid quantum memory–enabled network at room temperature

2020 ◽  
Vol 6 (6) ◽  
pp. eaax1425
Author(s):  
Xiao-Ling Pang ◽  
Ai-Lin Yang ◽  
Jian-Peng Dou ◽  
Hang Li ◽  
Chao-Ni Zhang ◽  
...  
Keyword(s):  
High Speed ◽  
Information Technologies ◽  
Room Temperature ◽  
Schwarz Inequality ◽  
Quantum Memory ◽  
Atomic Ensemble ◽  
Single Photons ◽  
Long Distance ◽  
Atomic Excitations ◽  
A Chain

Quantum memory capable of storage and retrieval of flying photons on demand is crucial for developing quantum information technologies. However, the devices needed for long-distance links are different from those envisioned for local processing. We present the first hybrid quantum memory-enabled network by demonstrating the interconnection and simultaneous operation of two types of quantum memory: an atomic ensemble-based memory and an all-optical Loop memory. Interfacing the quantum memories at room temperature, we observe a well-preserved quantum correlation and a violation of Cauchy-Schwarz inequality. Furthermore, we demonstrate the creation and storage of a fully-operable heralded photon chain state that can achieve memory-built-in combining, swapping, splitting, tuning, and chopping single photons in a chain temporally. Such a quantum network allows atomic excitations to be generated, stored, and converted to broadband photons, which are then transferred to the next node, stored, and faithfully retrieved, all at high speed and in a programmable fashion.

A long-lived solid-state quantum memory

2013 ◽  
Author(s):  
Nuala Timoney ◽  
Imam Usmani ◽  
Pierre Jobez ◽  
Mikael Afzelius ◽  
Nicolas Gisin
Keyword(s):  
Solid State ◽  
Quantum Memory
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