Optimizing circuit compiler for trapped-ion quantum computers

An ion trap quantum computing system, comprising:

• a quantum processor comprising a plurality of qubits, each qubit comprising a trapped ion having two hyperfine states;
• one or more lasers configured to emit a first Raman laser beam and a second Raman laser beam, which is provided to trapped ions in the quantum processor;
• a classical computer configured to perform operations comprising:
• converting a first quantum circuit to a second quantum circuit, wherein the first quantum circuit comprises a conventional gate set and the second quantum circuit comprises a standard trapped-ion gate set;
• generating a first optimized quantum circuit, which comprises the standard trapped-ion gate set, by adjusting the second quantum circuit;
• converting the first optimized quantum circuit to a third quantum circuit comprising a phase-insensitive trapped-ion gate set;
• and
• generating a second optimized quantum circuit comprising the phase-insensitive trapped-ion gate set, by adjusting the third quantum circuit;
• and
• a system controller configured to execute a control program to control the one or more lasers to perform operations on the quantum processor, the operations comprising:
• applying the first or the second optimized quantum circuit on the quantum processor to perform a computation;
• and
• measuring population of qubit states in the quantum processor,
• wherein the classical computer is further configured to output the measured population of qubit states in the quantum processor.

An ion trap quantum computing system, comprising:

• a classical computer;
• a quantum processor comprising a plurality of qubits, each qubit comprising a trapped ion having two hyperfine states;
• a system controller configured to execute a control program to control one or more lasers to perform operations on the quantum processor;
• and
• non-volatile memory having a number of instructions stored therein which, when executed by one or more processors, causes the ion trap quantum computing system to perform operations comprising:
• converting, by the classical computer, a first quantum circuit to a second quantum circuit, wherein the first quantum circuit comprises a conventional gate set and the second quantum circuit comprises a standard trapped-ion gate set;
• generating a first optimized quantum circuit, which comprises the standard trapped-ion gate set, by adjusting the second quantum circuit, by use of the classical computer;
• converting, by the classical computer, the first optimized quantum circuit to a third quantum circuit comprising a phase-insensitive trapped-ion gate set;
• generating a second optimized quantum circuit comprising the phase-insensitive trapped-ion gate set, by adjusting the third quantum circuit, by use of the classical computer;
• and
• applying, by the system controller, the first or the second optimized quantum circuit on a quantum computer to perform a computation;
• measuring, by the system controller, population of qubit states in the quantum processor;
• and
• outputting, by the classical computer, the measured population of qubit states in the quantum processor.