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SILICON QUBITS USED IN QUANTUM COMPUTERS

Tahir Iqbal, Hajira Kanwal, Aqsa Tehseen, Almas Bashir

Abstract


Silicon, a semiconducting material is extensively used in quantum computers. Kane added an impurity of phosphorus (31) in a regular pattern in crystal of pure silicon which was later used as quantum bits (qubits). At low temperatures when one rotation of qubit has completed we introduce a gate named J gate which reduces the barrier potential between nearby qubits and cause their nuclear and electronic spins to interact with each other, the phenomenon known as qubit-qubit interaction. These qubit-qubit interactions control the exchange of interactions between electronic and nuclear spins. The atomic size qubit interactions are easier to measure because their orbital radius is small but if orbital radius is greater than we convert the spin state of electrons into charge state to measure them. Donor impurities should deep and hollow to trap the electrons to produce nuclear spins.

Cite this Article: Tahir Iqbal, Hajira Kanwal, Aqsa Tehseen, Almas Bashir. Silicon Qubits used in Quantum Computers. International Journal of Mechanical Dynamics & Analysis. 2019; 5(2): 37–52p.


Keywords


Silicon Qubits; Fourier Transform and Nuclear Magnetic Resonance (NMR), quantum computers; quantum mechanics; qubit-qubit interaction

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