US 11,985,234 B2
Secure quantum swap
Benjamin Glen McCarty, Washington, DC (US); and Amin Hassanzadeh, Arlington, VA (US)
Assigned to Accenture Global Solutions Limited, Dublin (IE)
Filed by Accenture Global Solutions Limited, Dublin (IE)
Filed on May 13, 2022, as Appl. No. 17/744,323.
Prior Publication US 2023/0370254 A1, Nov. 16, 2023
Int. Cl. H04L 29/06 (2006.01); G06N 10/40 (2022.01); H04L 9/08 (2006.01)
CPC H04L 9/0852 (2013.01) [G06N 10/40 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A computer implemented method for implementing a quantum swap operation on a first qubit and a second qubit, the method comprising:
establishing, by a first party and with a second party, an agreement to use a secure swap protocol to perform the quantum swap operation;
performing, by the first party and with the second party, the quantum swap operation, comprising, for each two-qubit gate included in the quantum swap operation:
performing, by the first party and according to the secure swap protocol, a respective preceding quantum gate cipher on the first qubit, wherein the preceding quantum gate cipher comprises a computational basis that anti-commutes with a computational basis of the two-qubit gate across a first axis of a Bloch sphere;
performing, by the first party and the second party, the two-qubit gate on the first qubit and the second qubit; and
performing, by the first party and according to the secure swap protocol, a respective succeeding quantum gate cipher on the first qubit, wherein the succeeding quantum gate cipher comprises a computational basis that anti-commutes with a computational basis of the two-qubit gate across a second axis of the Bloch sphere.