The Sound of Quantum Mechanics
In the past decade a new technology domain of quantum sound has emerged. Unlike electrical and optical systems, which are governed by fundamental equations of electromagnetism, acoustical and vibrational phenomena are described by the equations of elastic waves in solid bodies. They are subject to different limitations and can reach different regimes of behavior. Sound is different.
Quantum information processing based on spins in semiconductor quantum dots
The field of Quantum Information is of great excitement in both fundamental physics and industry. One promising platform for quantum computing is gate-defined quantum dots in semiconductors. The greatest limiting factor currently is that delicate quantum states can lose their quantum nature due to interactions with their environment. Other open challenges are to coherently control large-scale spin qubits and develop methods to entangle quantum bits that are separated by significant distances.
Encoded Silicon Qubits: A High-Performance & Scalable Platform for Quantum Computing
Abstract: For quantum computers to achieve their promise, regardless of the qubit technology, significant improvements to both performance and scale are required. Quantum-dot-based qubits in silicon have recently enjoyed dramatic advances in fabrication and control techniques. The “exchange-only” modality is of particular interest, as it avoids control elements that are difficult to scale such as microwave fields, photonics, or ferromagnetic gradients. In this control scheme, the entirety of quantum computation may be performed using only asynchronous, baseband voltage pulses on straig
Dynamics of ultracold Bosons in tailored conservative and dissipative potentials
Abstract: In general, quantum states are very sensitive to coupling to the environment. In many cases this interaction leads to a loss of coherence and a transformation of the quantum mechanical system to classical behavior. However, quantum states can also be stabilized if the environment and the coupling to it are appropriately engineered. This is the basic idea of the research results that I will present in this talk.
Quantum simulating lattice gauge theories: ‘particle physics’ with Rydberg atom arrays
Gauge theories are the back-bone of our understanding of nature at the most fundamental level as captured by the standard model. Despite their elegance and conceptual simplicity, gauge theories have historically represented a major computational challenge in many-body theory - including, for instance, the real-time dynamics describing heavy-ion collisions at colliders, which is inaccessible to classical simulations based on Monte Carlo sampling.
Harnessing biosystems for quantum information science
It is well known that architectures for quantum sensing and quantum information processing require exceptional isolation from sources of decoherence, including electromagnetic and thermal noise, by shielding and cooling. Could robust room-temperature alternatives be envisioned using biosystems that are optimized for certain quantum processes in warm, wet, and wiggly environments?
Toward scalable quantum computing with a mixed-species Ba-Yb ion chain
Abstract: Trapped ions are among the most promising candidates for quantum information processors based on their unique properties such as long coherence time, high fidelity state initialization, manipulation and detection. In order to scale up quantum information processors based on trapped ions, efficient sympathetic cooling between different atomic species is required. In this work, we investigate both numerically and experimentally linear harmonic trap parameters to efficiently doppler-cool radial modes of mixed-species Ba-Yb ion chain [1].