TY  - JOUR
Y1  - 2017/11//
N2  - Entanglement is a fundamental property of quantum mechanics, and is a primary resource in quantum information systems. Its manipulation remains a central challenge in the development of quantum technology. In this work, we demonstrate a device which can generate, manipulate, and analyse two-qubit entangled states, using miniature and mass-manufacturable silicon photonics. By combining four photon-pair sources with a reconfigurable six-mode interferometer, embedding a switchable entangling gate, we generate two-qubit entangled states, manipulate their entanglement, and analyse them, all in the same silicon chip. Using quantum state tomography, we show how our source can produce a range of entangled and separable states, and how our switchable controlled-Z gate operates on them, entangling them or making them separable depending on its configuration.
AV  - public
SN  - 2040-8978
VL  - 19
IS  - 11
TI  - Silicon photonic processor of two-qubit entangling quantum logic
PB  - Institute of Physics Publishing Ltd.
UR  - https://eprints.gla.ac.uk/149248/
ID  - enlighten149248
A1  - Santagati, R.
A1  - Silverstone, J.W.
A1  - Strain, M.J.
A1  - Sorel, M.
A1  - Miki, S.
A1  - Yamashita, T.
A1  - Fujiwara, M.
A1  - Sasaki, M.
A1  - Terai, H.
A1  - Tanner, M.G.
A1  - Natarajan, C.M.
A1  - Hadfield, R.H.
A1  - O'Brien, J.L.
A1  - Thompson, M.G.
JF  - Journal of Optics
ER  -