We report the first experimental realization of an "optimal" quantum device able to perform a minimal disturbance measurement on polarization encoded qubits saturating the theoretical boundary established between the classical knowledge acquired of any input state, i.e., a "classical guess," and the fidelity of the same state after disturbance due to measurement. The device has been physically realized by means of a linear optical qubit manipulation, postselection measurement, and a classical feed-forward process.
Realization of a minimal disturbance quantum measurement / Sciarrino, Fabio; Marco, Ricci; DE MARTINI, Francesco; R., Filip; L., Mista Jr. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 96:2(2006), pp. 020408-1-020408-4. [10.1103/physrevlett.96.020408]
Realization of a minimal disturbance quantum measurement
SCIARRINO, Fabio;DE MARTINI, Francesco;
2006
Abstract
We report the first experimental realization of an "optimal" quantum device able to perform a minimal disturbance measurement on polarization encoded qubits saturating the theoretical boundary established between the classical knowledge acquired of any input state, i.e., a "classical guess," and the fidelity of the same state after disturbance due to measurement. The device has been physically realized by means of a linear optical qubit manipulation, postselection measurement, and a classical feed-forward process.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.