Implementation of quantum logic gates using polar molecules in pendular states.

Area of Science:

• Quantum computing
• Molecular physics
• Quantum information science

Background:

• Quantum computers require stable qubits.
• Polar molecules in pendular states offer a promising qubit platform.
• Controlling molecular qubits is crucial for quantum computation.

Purpose of the Study:

• To develop a systematic approach for implementing basic quantum logic gates.
• To utilize polar molecules in pendular states as qubits.
• To achieve high-fidelity quantum operations.

Main Methods:

• Employing a static electric field to create stable pendular states for qubits.
• Using electric field gradients to differentiate qubit sites.
• Applying multi-target optimal control theory with laser fields for gate optimization.

Main Results:

• Demonstrated realization of NOT, Hadamard, and CNOT quantum gates.
• Achieved high fidelity rates, up to 0.985, for these gates.
• Validated the approach using detailed simulations for the SrO molecule.

Conclusions:

• Polar molecules in pendular states are viable qubits for quantum computation.
• The proposed method enables high-fidelity implementation of essential quantum gates.
• This work contributes to the development of molecular quantum computers.