6533b7d1fe1ef96bd125cd89
RESEARCH PRODUCT
Creating quantum correlations through local non-unitary memoryless channels
Vittorio GiovannettiFrancesco Ciccarellosubject
PhysicsQuantum PhysicsQuantum discordFOS: Physical sciencesQuantum capacityQuantum channelAtomic and Molecular Physics and OpticsOpen quantum systemQuantum error correctionQuantum processQuantum mechanicsQuantum operationQuantum Physics (quant-ph)Amplitude damping channelquantum correlations quantum channels qubitENTANGLEMENTdescription
We show that two qubits, initially in a fully classical state, can develop significant quantum correlations as measured by the quantum discord (QD) under the action of a local memoryless noise (specifically we consider the case of a Markovian amplitude-damping channel). This is analytically proven after deriving in a compact form the QD for the class of separable states involved in such a process. We provide a picture in the Bloch sphere that unambiguously highlights the physical mechanism behind the effect regardless of the specific measure of QCs adopted.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 |