Implementing Deutsch-Jozsa algorithm using light shifts and atomic ensembles

Journal Article · Sat Jan 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.012333· OSTI ID:20650215

Dasgupta, Shubhrangshu; Biswas, Asoka; Agarwal, G S ^[1]

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1. Physical Research Laboratory, Navrangpura, Ahmedabad 380 009 (India)

We present an optical scheme to implement the Deutsch-Jozsa algorithm using ac Stark shifts. The scheme uses an atomic ensemble consisting of four-level atoms interacting dispersively with a field. This leads to a Hamiltonian in the atom-field basis which is quite suitable for quantum computation. We show how one can implement the algorithm by performing proper one- and two-qubit operations. We emphasize that in our model the decoherence is expected to be minimal due to our usage of atomic ground states and freely propagating photon.

• OSTI ID: 20650215
• Journal Information: Physical Review. A, Vol. 71, Issue 1; Other Information: DOI: 10.1103/PhysRevA.71.012333; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALGORITHMS
ATOMS
GROUND STATES
HAMILTONIANS
INFORMATION THEORY
PHOTON-ATOM COLLISIONS
PHOTONS
QUANTUM MECHANICS
STARK EFFECT
VISIBLE RADIATION