Tag: qubits
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Qubit-Efficient Optimization Recasts Problems As Geometry in Sub-2^n Hilbert Space
Overview: A New Geometric Lens for Optimization Quantum computing has long promised to tackle hard optimization tasks, but the resource demands—especially the number of qubits—often posed a barrier. In recent work, researchers led by Gordon Ma and Dimitris … explore a novel approach: recasting optimization problems as geometric structures within a Hilbert space smaller than…
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Qubit-Efficient Optimization: Geometry in a Smaller Hilbert Space
Recasting optimization as geometry Quantum computing has promised exponential speedups for certain problems, but practical implementations still face the hurdle of qubit scarcity and error rates. A growing research direction aims to reframe challenging optimization tasks as geometric problems within a carefully crafted Hilbert space. By doing so, scientists can capture the essential structure of…
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Time Crystals Offer Minutes of Quantum Memory for Qubits
What makes time crystals a game changer for quantum memory Time crystals are a provocative phase of matter whose structure repeats in time, not just in space. This unusual behavior creates a potential pathway to preserve quantum information longer than today’s fleeting storage, where data typically decays in milliseconds. Recent experiments suggest that time crystals…
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Time crystals as quantum memory: a potential leap for quantum storage
What are time crystals and why do they matter for quantum memory? Time crystals are a exotic state of matter where a system exhibits motion at regular intervals without expending energy. In plain terms, they create a stable rhythm, a kind of perpetual, though highly controlled, motion. This unusual behavior has captured the attention of…
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Twice Around To Return Home: Hidden Reset Button For Spins And Qubits
Introduction: A Hidden Reset Button in Rotations Rotations govern a vast array of physical systems, from classical gyroscopes to quantum qubits. In three dimensions, the mathematical language describing these motions is the rotation group SO(3) for classical objects and its quantum counterpart SU(2). A striking and practical insight emerges when we consider walks through these…
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Twice Around To Return Home: A Hidden Reset Button for Spins and Qubits
Introduction: A surprising reset in the world of rotations Rotations lie at the heart of much of modern science and technology. From the precession of nuclear spins in NMR machines to the precise control of qubits in quantum computers, many physical systems evolve through a series of rotations. These sequences can be imagined as walks…
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Twice Around To Return Home: The Hidden Reset Button for Spins and Qubits
Introduction: A surprising reset for complex rotations Rotations are everywhere in science and technology. Gyroscopes, magnetic spins, and quantum bits (qubits) each follow sequences of twists and turns that can be described as walks on the rotation groups SO(3) for classical objects and SU(2) for quantum systems. A provocative question arises: given a long, tangled…