Abstract
Although quantum computers promise significant advantages, the complexity of quantum algorithms remains a major technological obstacle. We have developed and demonstrated an architecture-independent technique that simplifies adding control qubits to arbitrary quantum operations - a requirement in many quantum algorithms, simulations and metrology. The technique, which is independent of how the operation is done, does not require knowledge of what the operation is, and largely separates the problems of how to implement a quantum operation in the laboratory and how to add a control. Here, we demonstrate an entanglement-based version in a photonic system, realizing a range of different two-qubit gates with high fidelity.
| Original language | English |
|---|---|
| Article number | 413 |
| Journal | Nature Communications |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 11 Aug 2011 |
| Externally published | Yes |
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Adding control to arbitrary unknown quantum operations. / Zhou, Xiao Qi; Ralph, Timothy C.; Kalasuwan, Pruet; Zhang, Mian; Peruzzo, Alberto; Lanyon, Benjamin P.; O'Brien, Jeremy L.
In: Nature Communications, Vol. 2, No. 1, 413, 11.08.2011.Research output: Contribution to journal › Article
TY - JOUR
T1 - Adding control to arbitrary unknown quantum operations
AU - Zhou, Xiao Qi
AU - Ralph, Timothy C.
AU - Kalasuwan, Pruet
AU - Zhang, Mian
AU - Peruzzo, Alberto
AU - Lanyon, Benjamin P.
AU - O'Brien, Jeremy L.
PY - 2011/8/11
Y1 - 2011/8/11
N2 - Although quantum computers promise significant advantages, the complexity of quantum algorithms remains a major technological obstacle. We have developed and demonstrated an architecture-independent technique that simplifies adding control qubits to arbitrary quantum operations - a requirement in many quantum algorithms, simulations and metrology. The technique, which is independent of how the operation is done, does not require knowledge of what the operation is, and largely separates the problems of how to implement a quantum operation in the laboratory and how to add a control. Here, we demonstrate an entanglement-based version in a photonic system, realizing a range of different two-qubit gates with high fidelity.
AB - Although quantum computers promise significant advantages, the complexity of quantum algorithms remains a major technological obstacle. We have developed and demonstrated an architecture-independent technique that simplifies adding control qubits to arbitrary quantum operations - a requirement in many quantum algorithms, simulations and metrology. The technique, which is independent of how the operation is done, does not require knowledge of what the operation is, and largely separates the problems of how to implement a quantum operation in the laboratory and how to add a control. Here, we demonstrate an entanglement-based version in a photonic system, realizing a range of different two-qubit gates with high fidelity.
UR - http://www.scopus.com/inward/record.url?scp=79961192724&partnerID=8YFLogxK
U2 - 10.1038/ncomms1392
DO - 10.1038/ncomms1392
M3 - Article
VL - 2
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 413
ER -