Phys.org October 30, 2024 Arrays of coupled superconducting qubits natively emulate the dynamics of interacting particles according to the Bose–Hubbard model. However, many interesting condensed-matter phenomena emerge only in the presence of electromagnetic fields. A team of researchers in the US (MIT, MIT Lincoln Laboratory) emulated the dynamics of charged particles in an electromagnetic field using a superconducting quantum simulator. They produced a broadly adjustable synthetic magnetic vector potential by applying continuous modulation tones to all qubits. The synthetic vector potential obeyed the required properties of electromagnetism… read more. TECHNICAL ARTICLE
Tag Archives: Quantum simulator
Higher-order topological simulation unlocks new potential in quantum computers
Phys. org August 30, 2024 At present the range of viable applications with noisy intermediate-scale quantum (NISQ) devices remains limited by gate errors and the number of high-quality qubits. An international team of researchers (USA – Caltech, MIT, Singapore) developed an approach that places digital NISQ hardware as a versatile platform for simulating multi-dimensional condensed matter systems. Their method encoded a high-dimensional lattice in terms of many-body interactions on a reduced-dimension model, thereby taking full advantage of the exponentially large Hilbert space of the host quantum system. With circuit optimization and error mitigation techniques, they measured the topological state dynamics […]
Physicists harness electrons to make ‘synthetic dimensions’
Phys.org February 21, 2022 To push spatial boundaries researchers at Rice University developed a technique to engineer the Rydberg states of ultracold strontium atoms by applying resonant microwave electric fields to couple many states together, making the levels look like particles that just move around between locations in space. Rydberg atoms possess many regularly spaced quantum energy levels, which can be coupled by microwaves that allow the highly excited electron to move from level to level. They demonstrated their techniques by making a 1D lattice using lasers to cool strontium atoms and applied microwaves with alternating weak and strong couplings […]