Abstract The operation of a fast quantum memory protocol on a single three-level atom in cavity is theoretically modeled. The influence of losses, such as cavity loss and atomic relaxation on the efficiency of photon loading on long-lived atomic states, is considered. By choosing the optimal experimentally achieved parameters of the system and control pulse, we show the possibility of increasing efficiency up to 56.9% for a hyperbolic secant signal photon wave packet, which is 2 times more than the efficiency achieved so far for such quantum memory.Abstract The operation of a fast quantum memory protocol on a single three-level atom in cavity is theoretically modeled. The influence of losses, such as cavity loss and atomic relaxation on the efficiency of photon loading on long-lived atomic states, is considered. By choosing the optimal experimentally achieved parameters of the system and control pulse, we show the possibility of increasing efficiency up to 56.9% for a hyperbolic secant signal photon wave packet, which is 2 times more than the efficiency achieved so far for such quantum memory.

Russian MicroelectronicsDec 1, 20230 citations

A single-atom quantum memory

Holger Specht, Christian Nölleke, Andreas Reiserer +4 more

arXiv:1103.1528NatureApr 28, 2011443 citations

Quantum Memory in Atomic Ensembles

Joshua Nunn

Jan 1, 200810 citations

Intra-atomic frequency-comb-based photonic quantum memory using single-atom-cavity setup

Chanchal, G. P. Teja, Sandeep K. Goyal

On-demand and efficient storage of photons is an essential element in quantum information processing and long-distance quantum communication. Most of the quantum memory protocols require bulk systems in order to store photons. However, with the advent of integrated photonic chip platforms for quantum information processing, on-chip quantum memories are highly sought after. In this paper, we propose a protocol for multimode photonic quantum memory using only a single-atom-cavity setup. We show that a single atom containing a frequency comb coupled to an optical cavity can store photons efficiently. Further, this scheme can also be used to store polarization states of light. As examples, we show that rubidium and cesium atoms coupled to nanophotonic waveguide cavities can serve as promising candidates to realize our scheme. This provides the possibility of a robust and efficient on-chip quantum memory to be used in integrated photonic chips.On-demand and efficient storage of photons is an essential element in quantum information processing and long-distance quantum communication. Most of the quantum memory protocols require bulk systems in order to store photons. However, with the advent of integrated photonic chip platforms for quantum information processing, on-chip quantum memories are highly sought after. In this paper, we propose a protocol for multimode photonic quantum memory using only a single-atom-cavity setup. We show that a single atom containing a frequency comb coupled to an optical cavity can store photons efficiently. Further, this scheme can also be used to store polarization states of light. As examples, we show that rubidium and cesium atoms coupled to nanophotonic waveguide cavities can serve as promising candidates to realize our scheme. This provides the possibility of a robust and efficient on-chip quantum memory to be used in integrated photonic chips.

arXiv:2207.10585Physical Review AJan 26, 20231 citation

Quantum Memory with a Single Photon in a Cavity

Xavier Maı̂tre, E. W. Hagley, Gilles Nogues +5 more

The quantum information carried by a two-level atom was transferred to a high- $Q$ cavity and, after a delay, to another atom. We realized in this way a quantum memory made of a field in a superposition of 0 and 1 photon Fock states. We measured the ``holding time'' of this memory corresponding to the decay of the field intensity or amplitude at the single photon level. This experiment implements a step essential for quantum information processing operations.The quantum information carried by a two-level atom was transferred to a high- $Q$ cavity and, after a delay, to another atom. We realized in this way a quantum memory made of a field in a superposition of 0 and 1 photon Fock states. We measured the ``holding time'' of this memory corresponding to the decay of the field intensity or amplitude at the single photon level. This experiment implements a step essential for quantum information processing operations.

Physical Review LettersJul 28, 1997293 citations

Quantum memory at the nanoscale

NatureSep 1, 20170 citations

The quantum information carried by a two-level atom was transferred to a high-

Q

cavity and, after a delay, to another atom. We realized in this way a quantum memory made of a field in a superposition of 0 and 1 photon Fock states. We measured the ``holding time'' of this memory corresponding to the decay of the field intensity or amplitude at the single photon level. This experiment implements a step essential for quantum information processing operations.