Abstract
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.
| Original language | English |
|---|---|
| Article number | 114006 |
| Journal | Journal of Optics |
| Volume | 19 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 17 Oct 2017 |
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Keywords
- entanglement
- integrated quantum information processing
- photonic qubits
- quantum photonics
- silicon quantum photonics
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
Cite this
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Silicon photonic processor of two-qubit entangling quantum logic. / Santagati, Raffaele; Silverstone, Joshua W.; Strain, M. J.; Sorel, M.; Miki, S.; Yamashita, T.; Fujiwara, M.; Sasaki, M.; Terai, H.; Tanner, Michael George; Natarajan, C. M.; Hadfield, Robert H.; O'Brien, Jeremy L.; Thompson, Mark G.
In: Journal of Optics, Vol. 19, No. 11, 114006, 17.10.2017.Research output: Contribution to journal › Article
TY - JOUR
T1 - Silicon photonic processor of two-qubit entangling quantum logic
AU - Santagati, Raffaele
AU - Silverstone, Joshua W.
AU - Strain, M. J.
AU - Sorel, M.
AU - Miki, S.
AU - Yamashita, T.
AU - Fujiwara, M.
AU - Sasaki, M.
AU - Terai, H.
AU - Tanner, Michael George
AU - Natarajan, C. M.
AU - Hadfield, Robert H.
AU - O'Brien, Jeremy L.
AU - Thompson, Mark G.
PY - 2017/10/17
Y1 - 2017/10/17
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.
AB - 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.
KW - entanglement
KW - integrated quantum information processing
KW - photonic qubits
KW - quantum photonics
KW - silicon quantum photonics
UR - http://www.scopus.com/inward/record.url?scp=85032788673&partnerID=8YFLogxK
U2 - 10.1088/2040-8986/aa8d56
DO - 10.1088/2040-8986/aa8d56
M3 - Article
VL - 19
JO - Journal of Optics
JF - Journal of Optics
SN - 2040-8978
IS - 11
M1 - 114006
ER -