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quant-ph2004
Demonstrating quantum nonlocality without entanglement
G. J. Pryde, J. L. O'Brien, A. G. White +1
We experimentally demonstrate the superior discrimination of separated, unentangled two-qubit correlated states using nonlocal measurements, when compared with measurements based o…
quant-ph2004
High-Fidelity Z-Measurement Error Correction of Optical Qubits
J. L. O'Brien, G. J. Pryde, A. G. White +1
We demonstrate a quantum error correction scheme that protects against accidental measurement, using an encoding where the logical state of a single qubit is encoded into two physi…
quant-ph2003
Measuring a photonic qubit without destroying it
G. J. Pryde, J. L. O'Brien, A. G. White +2
Measuring the polarisation of a single photon typically results in its destruction. We propose, demonstrate, and completely characterise a \emph{quantum non-demolition} (QND) schem…