All unital qubit channels are 4-noisy operations
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All unital qubit channels are 4-noisy operations. / Müller-Hermes, Alexander; Perry, Christopher.
I: Letters in Mathematical Physics, Bind 109, Nr. 1, 2019, s. 1-9.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › fagfællebedømt
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TY - JOUR
T1 - All unital qubit channels are 4-noisy operations
AU - Müller-Hermes, Alexander
AU - Perry, Christopher
PY - 2019
Y1 - 2019
N2 - We show that any unital qubit channel can be implemented by letting the input system interact unitarily with a four-dimensional environment in the maximally mixed state and then tracing out the environment. We also provide an example where the dimension of such an environment has to be at least 3.
AB - We show that any unital qubit channel can be implemented by letting the input system interact unitarily with a four-dimensional environment in the maximally mixed state and then tracing out the environment. We also provide an example where the dimension of such an environment has to be at least 3.
KW - Factorizable maps
KW - Noisy operations
KW - Open quantum systems
KW - Operator Schmidt rank
KW - Quantum channels
UR - http://www.scopus.com/inward/record.url?scp=85048130378&partnerID=8YFLogxK
U2 - 10.1007/s11005-018-1104-x
DO - 10.1007/s11005-018-1104-x
M3 - Journal article
VL - 109
SP - 1
EP - 9
JO - Letters in Mathematical Physics
JF - Letters in Mathematical Physics
SN - 0377-9017
IS - 1
ER -
ID: 198652987