Coherence time is the duration over which a quantum system, such as a photon or an electron, maintains a well-defined phase relationship, essential for quantum computing and communication. It determines the time scale over which quantum information can be preserved before decoherence disrupts the system's quantum state.

Coherence Time

Coherence time

quantum system

A photon is a fundamental particle of light and electromagnetic radiation, which exhibits both wave-like and particle-like properties. It is massless, travels at the speed of light in a vacuum, and is the quantum of the electromagnetic field, playing a crucial role in quantum mechanics and electromagnetism.

photon

An electron is a subatomic particle with a negative electric charge, fundamental to the structure of atoms and the flow of electricity. It plays a crucial role in chemical bonding and is a central element of quantum mechanics, influencing the behavior of atoms and molecules.

electron

Phase relationship refers to the relative alignment of two or more periodic signals in time, which can significantly affect how these signals interact and combine. Understanding phase relationships is crucial in various fields such as electronics, acoustics, and wave physics, as it can influence phenomena like interference, resonance, and signal synchronization.

phase relationship

Quantum computing leverages the principles of quantum mechanics to process information in ways that classical computers cannot, using qubits that can exist in multiple states simultaneously. This allows for potentially exponential increases in computing power, enabling solutions to complex problems in fields like cryptography, optimization, and materials science.

quantum computing

Quantum communication leverages the principles of quantum mechanics, such as entanglement and superposition, to enable secure information transfer that is theoretically immune to eavesdropping. This technology promises to revolutionize secure data transmission and has potential applications in quantum networks and quantum cryptography.

Quantum Communication

time scale

Quantum information explores the encoding, processing, and transmission of information using the principles of quantum mechanics, offering revolutionary approaches to computation and communication. It leverages phenomena like superposition and entanglement to perform operations beyond the capabilities of classical systems.

quantum information

Decoherence is a quantum mechanical process where a system loses its quantum coherence, causing the transition from a quantum superposition to classical probabilistic states. It explains the apparent collapse of the wavefunction without invoking an observer, bridging the gap between quantum mechanics and classical physics.

decoherence

A quantum state is a mathematical object that fully describes a quantum system, encapsulating all its possible information, such as position, momentum, and spin. It is typically represented by a wave function or a state vector in a complex Hilbert space, and its evolution is governed by the Schrödinger equation.

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