Ben-Gurion University of the Negev Research and Development Authority

Dor Bitan

Shlomi Dolev

Daniel Berend

A computer implemented method for encoding bits by qubits to perform information-theoretically secure quantum gate computation, according to which pairs of quantum bits consisting of a first qubit as an encoding of '0' and a second qubit as an encoding of “1” are randomly selected, such that the first and second qubits are orthogonal to each other as quantum states and are interchanged by a NOT gate. Each qubit rotating to a desired initial direction and then each rotated qubit is further rotated to its antipodal direction by applying a quantum NOT or CNOT gate to the each rotated qubit, without any knowledge about the desired direction. A unitary gate is further applied over the qubits, using an ancillary |0qubit that creates an equally weighted superposition of the qubits.

System and method for performing information—theoretically secure quantum gate computation and quantum key distribution, based on random rotation of qubits

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Lehavim, Israel

Dor Bitan