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Quantum computing holds immense potential, yet many systems operate only at extremely low temperatures, making them costly and commercially unfeasible.
Researchers are exploring alternative technologies to drive down costs and enhance the commercial viability of quantum computers.

Quantum Computing

Quantum computing is a paradigm of computation that utilizes principles from quantum mechanics to process information.
In quantum mechanics, particles exhibit wavelike properties, and their behavior is governed by the Schrodinger equation, which describes how these waves behave.

Key Concepts:

Wave-Particle Duality: Quantum objects, like electrons and photons, exhibit both particle-like and wave-like properties simultaneously, known as wave-particle duality.
Superposition: Objects in quantum science can exist in superposition states, where their quantum state is a combination of multiple states until measured. This concept allows qubits to represent multiple states simultaneously.
Quantum States and Qubits: Qubits are the fundamental units of quantum information, representing a two-state quantum system that can be in a superposition of 0 and 1 until measured.
Quantum Gates: Quantum computers use quantum gates to manipulate qubits through reversible unitary transformations, enabling complex computations based on algorithms.
Entanglement: Quantum entanglement is a unique property where multiple qubits can be correlated in such a way that the state of one qubit is dependent on the state of another, allowing for powerful computational capabilities.

Classical vs. Quantum: Similar to classical computers, which rely on bits with two states (0 and 1), quantum computers operate using qubits—physical systems with two quantum states.
Unique Feature: Unlike classical bits, qubits can exist not only in one of the two states but also in a superposed state, where they simultaneously hold both states. However, this superposition is fragile and prone to disruption from external interactions.

Requirement for Identical Qubits: A collection of qubits is necessary for a quantum device, each needing to be identical—a challenge due to manufacturing imperfections.
Controllability and Robustness: Qubits must be controllable, allowing manipulation and interaction, while also being robust enough to maintain quantum features at room temperature over extended durations.

Diverse Options: Various physical systems serve as qubits, including superconducting junctions, trapped ions, and quantum dots. However, these systems typically require low temperatures or vacuum conditions for operation.
High Cost Barrier: The necessity for such conditions renders quantum computers based on these technologies expensive, prompting research into simpler, cost-effective alternatives.

Metal-Organic Framework (MOF): In a recent collaborative study reported in Science Advances, researchers in Japan achieved qubits at room temperature within a metal-organic framework.
Composition: The MOF consists of repeated molecular arrangements, with zirconium as the metal component and an organic molecule containing the chromophore pentacene bridging the metal atoms.
Singlet Fission Mechanism: Singlet fission, facilitated by interaction between chromophores within the porous MOF networks, generates two triplet excited chromophores from a singlet excited state.
Enhanced Stability: The rotation of chromophores within the MOF networks modulates interactions, ensuring long-lived coherence of triplet states even at room temperature.