Ultrafast quantum random access memory utilizing single Rydberg atoms in a Bose-Einstein condensate
arXiv:1307.0963 · doi:10.1103/PhysRevLett.111.240504
Abstract
We propose a long-lived and rapidly accessible quantum memory unit, for which the operational Hilbert space is spanned by states involving the two macroscopically occupied hyperfine levels of a miscible binary atomic Bose-Einstein condensate and the Rydberg state of a single atom. It is shown that an arbitrary qubit state, initially prepared using a flux qubit, can be rapidly transferred to and from the trapped atomic ensemble in approximately 10 ns and with a large fidelity of 97%, via an effective two-photon process using an external laser for the transition to the Rydberg level. The achievable ultrafast transfer of quantum information therefore enables a large number of storage and retrieval cycles from the highly controllable quantum optics setup of a dilute ultracold gas, even within the typically very short flux qubit lifetimes of the order of microseconds.
5 pages of RevTex4-1, 2 figures
References in corpus (11)
- Cavity QED with a Bose-Einstein condensate
- Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity
- Tuning the Gap of a Superconducting Flux Qubit
- Coupling a single electron to a Bose-Einstein condensate
- Spatially Resolved Excitation of Rydberg Atoms and Surface Effects on an Atom Chip
- Towards Realizing a Quantum Memory for a Superconducting Qubit: Storage and Retrieval of quantum states
- Holographic quantum computing
- Detrimental adsorbate fields in experiments with cold Rydberg gases near surfaces
- Spin flip lifetimes in superconducting atom chips: BCS versus Eliashberg theory
- Spectral properties of a Rydberg atom immersed in a Bose-Einstein condensate
- Transfer and storage of qubits in the presence of decoherence
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- Manipulating Rydberg atoms close to surfaces at cryogenic temperatures
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