Quantum information interception prevention

A computer implemented method comprising:

• encoding, by a sender party, quantum information into an information qubit;
• encrypting, by the sender party, the information qubit, comprising performing i) a parity operation on the information qubit and a parity control qubit and ii) a phase operation on the information qubit and a phase control qubit;
• performing, by a sender party, a sequence of one or more quantum logic gates on the phase control qubit, wherein the sequence of one or more quantum logic gates is i) non-equivalent to an identity operation, ii) non-equivalent to a stabilizer operator from a stabilizer code, or iii) non-equivalent to an identity operation and non-equivalent to a stabilizer operator from a stabilizer code;
• sending, by the sender party, the information qubit, parity control qubit, and phase control qubit to a recipient party;
• and
• sending, by the sender party, data identifying the sequence of one or more quantum logic gates to the recipient party, wherein the recipient party obtains the quantum information encoded into the information qubit based on the information qubit, parity control qubit, phase control qubit, and data identifying the sequence of one or more quantum logic gates.

A computer implemented method comprising:

• encoding, by a sender party, quantum information into an information qubit, wherein the information qubit comprises a first information qubit;
• encoding, by the sender party, quantum information into a second information qubit;
• entangling, by the sender party, the first information qubit and second information qubit;
• encrypting, by the sender party, the first information qubit, comprising performing i) a parity operation on the first information qubit and a parity control qubit and ii) a phase operation on the first information qubit and a phase control qubit;
• performing, by a sender party, a sequence of one or more quantum logic gates on the phase control qubit;
• sending, by the sender party, the information qubit, parity control qubit, and phase control qubit to a recipient party;
• sending, by the sender party, the second information qubit to the recipient party;
• and
• sending, by the sender party, data identifying the sequence of one or more quantum logic gates to the recipient party, wherein the recipient party obtains the quantum information encoded into the first information qubit and second information qubit based on the first information qubit, second information qubit, parity control qubit, phase control qubit, and data identifying the sequence of one or more quantum logic gates.

A computer implemented method comprising:

• encoding, by a sender party, quantum information into an information qubit;
• encrypting, by the sender party, the information qubit, comprising performing i) a parity operation on the information qubit and a parity control qubit and ii) a phase operation on the information qubit and a phase control qubit, wherein the parity control qubit comprises a first parity control qubit and the phase control qubit comprises a first phase control qubit and wherein encrypting the information qubit further comprises performing i) the parity operation on the information qubit and a second parity control qubit and ii) the phase operation on the information qubit and a second phase control qubit;
• performing, by the sender party, a sequence of one or more quantum logic gates on the second phase control qubit;
• and
• sending, by the sender party, data identifying the sequence of one or more quantum logic gates, the information qubit, the first parity control qubit, the first phase control qubit, the second parity control qubit and the second phase control qubit to a recipient party, wherein the recipient party obtains the quantum information encoded into the information qubit based on the information qubit, first parity control qubit, first phase control qubit, second parity control qubit, second phase control qubit and data identifying the sequence of one or more quantum logic gates.

A system comprising:

• one or more classical processors;
• and
• quantum computing hardware;
• wherein the system is configured to perform operations comprising:
• encoding, by a sender party, quantum information into an information qubit;
• encrypting, by the sender party, the information qubit, comprising performing i) a parity operation on the information qubit and a parity control qubit and ii) a phase operation on the information qubit and a phase control qubit;
• performing, by a sender party, a sequence of one or more quantum logic gates on the phase control qubit;
• sending, by the sender party, the information qubit, parity control qubit, and phase control qubit to a recipient party;
• and
• sending, by the sender party, data identifying the sequence of one or more quantum logic gates to the recipient party, wherein the recipient party obtains the quantum information encoded into the information qubit based on the information qubit, parity control qubit, phase control qubit, and data identifying the sequence of one or more quantum logic gates.

A computer-implemented method comprising:

• receiving, by a recipient party and from a sender party, i) an information qubit, ii) a parity control qubit, and iii) a phase control qubit, wherein the information qubit encodes quantum information;
• receiving, by the recipient party and from the sender party, data identifying a sequence of one or more quantum logic gates;
• obtaining, by the recipient party, the quantum information encoded in the information qubit, comprising:
• performing an inverse of the sequence of one or more quantum logic gates on the phase control qubit;
• decrypting the information qubit, comprising performing i) an inverse phase operation on the information qubit and phase control qubit and ii) an inverse parity operation on the information qubit and the parity control qubit;
• and
• measuring the information qubit.

A system comprising:

• one or more classical processors;
• and
• quantum computing hardware;
• wherein the system is configured to perform operations comprising:
• receiving, by a recipient party and from a sender party, i) an information qubit, ii) a parity control qubit, and iii) a phase control qubit, wherein the information qubit encodes quantum information;
• receiving, by the recipient party and from the sender party, data identifying a sequence of one or more quantum logic gates;
• obtaining, by the recipient party, the quantum information encoded in the information qubit, comprising:
• performing an inverse of the sequence of one or more quantum logic gates on the phase control qubit;
• decrypting the information qubit, comprising performing i) an inverse phase operation on the information qubit and phase control qubit and ii) an inverse parity operation on the information qubit and the parity control qubit;
• and
• measuring the information qubit.