Quantum computers can transform the field of computing by utilizing the laws of quantum mechanics to execute intricate computations that are beyond the capabilities of traditional computers. Nonetheless, a significant obstacle in the development of quantum computers has always been the manipulation and control of quantum information dubbed Qubits.
SNAIL Circuit
However, it appears researchers have made a significant breakthrough in coming up with a new method of manipulating quantum information. As it stands, the new method could lead to more efficient quantum computers.
Researchers at the University of Technology in Sweden have devised a new approach to controlling Qubits using a superconducting circuit called SNAIL or Superconducting Nonlinear Asymmetric Inductive eLement.
The main innovation lies in turning particular nonlinear interactions in the SNAIL resonator on and off using customized microwave pulses. This allows scientists to carry out a broad spectrum of quantum operations, including a comprehensive collection of quantum gates, crucial components for quantum computing.
The scientists set up their quantum computing gadget with a superconducting flat-panel design. They were created using traditional lithography methods and tested at extremely low temperatures (approximately ten milliKelvins) in a dilution refrigerator.
Quantum Computation
The core component of the gadget is the SNAIL resonator, functioning as a bosonic mode – a category of quantum system utilized for the storage and manipulation of quantum data. Through precise planning and integration of the SNAIL part into the resonator, the scientists managed to incorporate nonlinearities that can be switched on and off with microwave signals.
The findings from the tests reveal that the SNAIL resonator-based method allows for quick and effective quantum computations. The scientists achieved a comprehensive collection of quantum operations, encompassing the non-Gaussian cubic phase gate, which was accomplished in merely 60 nanoseconds – a notable improvement over earlier techniques.
Additionally, by merging the compression and cubic phase gates, the scientists methodically created a highly non-classical quantum state referred to as a cubic phase state. This state serves as a crucial resource for specific quantum computing operations and holds promise for uses in quantum error correction and quantum sensing.
