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4 papers · 2 filters
Robust quantum searching with spontaneously decaying qubits
Robert J. C. Spreeuw, Tom W. Hijmans
We present a modification of the standard single-item quantum search procedure that acquires robustness from spontaneous decay of the qubits. This damps the usual oscillation of po…
Collisional decoherence during writing and reading quantum states
Stephanie Manz, Thomas Fernholz, Joerg Schmiedmayer +1
Collisions, even though they do not limit the lifetime of quantum information stored in ground state hyperfine coherences, may severely limit the fidelity for quantum memory when t…
Time and frequency domain solutions in an optical analogue of Grover's search algorithm
T. W. Hijmans, T. N. Huussen, R. J. C. Spreeuw
We present new results on an optical implementation of Grover's quantum search algorithm. This extends previous work in which the transverse spatial mode of a light beam oscillates…
Simultaneous position and state measurement of Rydberg atoms
C. S. E. van Ditzhuijzen, A. F. Koenderink, L. D. Noordam +1
We present a technique for state-selective position detection of cold Rydberg atoms. Ground state Rb atoms in a magneto-optical trap are excited to a Rydberg state and are subseque…