Quantum Non-Demolition Bell State Measurement and N-party GHZ State Preparation in Quantum Dot
Guo, Guo-Ping · Zhang, Hui · Guo, Guang-Can
Original · EN
By exploiting the fermionic qubit parity measurement, we present a scheme to realize quantum non-demolition (QND) measurement of Bell-states and generate n-party GHZ state in quantum dot. Compared with the original protocol, the required electron transfer before and after parity measurement can be nonadiabatic, which may speed up the operation speed and make the omitting of spin-orbit interaction more reasonable. This may help us to construct CNOT gate without highly precise control of coupling as the way of D. Gottesman and I. L. Chuang.
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