TY - JOUR
T1 - Quantum amplitude amplification by phase noise
AU - Sadgrove, M.
PY - 2009/11/23
Y1 - 2009/11/23
N2 - I consider a system in which an atom in a superposition of momentum eigenstates of a periodic potential is subject to periodic random phase jumps in that potential. If the j-th state in superposition is "marked" by giving the (j-1)-th state a phase flip, I show that for the correct amount of noise, a ∼6 dB amplification of the marked state probability amplitude occurs, with no significant amplification in other states.
AB - I consider a system in which an atom in a superposition of momentum eigenstates of a periodic potential is subject to periodic random phase jumps in that potential. If the j-th state in superposition is "marked" by giving the (j-1)-th state a phase flip, I show that for the correct amount of noise, a ∼6 dB amplification of the marked state probability amplitude occurs, with no significant amplification in other states.
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U2 - 10.1209/0295-5075/86/50005
DO - 10.1209/0295-5075/86/50005
M3 - Article
AN - SCOPUS:79051468942
SN - 0295-5075
VL - 86
JO - Journal de Physique (Paris), Lettres
JF - Journal de Physique (Paris), Lettres
IS - 5
M1 - 50005
ER -