Quantum Teleportation in Quantum Dots System
نویسندگان
چکیده
We present a model of quantum teleportation protocol based on one-dimensional quantum dots system. Three quantum dots with three electrons are used to perform teleportation, the unknown qubit is encoded using one electron spin on quantum dot A, the other two dots B and C are coupled to form a mixed space-spin entangled state. By choosing the Hamiltonian for the mixed spacespin entangled system, we can filter the space (spin) entanglement to obtain pure spin (space) entanglement, and after a Bell measurement, the unknown qubit is transfered to quantum dot B. Selecting an appropriate Hamiltonian for the quantum gate allows the spin-based information to be transformed into a charge-based information. The possibility of generalizing this model to N -electrons is discussed. The Hamiltonian to construct the CNOT gate, and the pulse sequence to realize the Hamiltonian are discussed in detail.
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