6533b82dfe1ef96bd1291f71
RESEARCH PRODUCT
Optical control of entangled states in semiconductor quantum wells
Thomas BlasiThomas BlasiEsa RäsänenEsa RäsänenEsa RäsänenEric J. HellerMario F. BorundaMario F. Borundasubject
Quantum technologyPhysicsOpen quantum systemQuantum discordQuantum networkQuantum error correctionQuantum mechanicsQuantum simulatorQuantum channelQuantum informationCondensed Matter Physics114 Physical sciencesElectronic Optical and Magnetic Materialsdescription
We present theory and calculations for coherent high-fidelity quantum control of many-particle states in semiconductor quantum wells. We show that coupling a two-electron double quantum dot to a terahertz optical source enables targeted excitations that are one to two orders of magnitude faster and significantly more accurate than those obtained with electric gates. The optical fields subject to physical constraints are obtained through quantum optimal control theory that we apply in conjunction with the numerically exact solution of the time-dependent Schrödinger equation. Our ability to coherently control arbitrary two-electron states, and to maximize the entanglement, opens up further perspectives in solid-state quantum information. Peer reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-11-08 | Physical Review B |