What Are Subatomic Particles And How It Is Used As Qubits
What are subatomic particles?
Subatomic particles are needed to make qubits, the building units of quantum computing. Qubits, unlike classical bits, can exist as 0, 1, or both simultaneously through superposition and become fundamentally linked through entanglement using quantum processes inherent to these particles.
Using Subatomic Particles as Qubits
To represent the quantum states of ∣0⟩ and ∣1⟩, particles’ spin or energy levels are adjusted. For as long as feasible, they are isolated to maintain their fragile quantum states.
Some subatomic particles and their uses:
Manipulating electron spin or other quantum states can make an electron a qubit.
The ∣0⟩ and ∣1⟩ states of photons, used as qubits, can be represented via time-bin encoding or horizontal or vertical polarisation. Photons are delivered through mirrors and beam splitters for quantum operations.
The loss or gain of electrons gives these atoms an electric charge. A vacuum’s electric or magnetic fields hold them. Lasers control the ions’ intrinsic energy levels, which are qubits. For quantum operations, these ions can be precisely moved and entangled.
Other Particles: Other subatomic particles or quantum systems are being studied to make qubits like quarks for quantum simulations of particle physics.
Key Quantum Phenomena Used
Quantum computers utilising subatomic particles can leverage strong quantum phenomena:
Superposition: Qubits, comprised of electrons and photons, can exist in many “0” and “1” states.
Getting entangled makes two or more qubits intrinsically linked. The status of one impacts the others immediately, regardless of distance. Quantum computers may study multiple possibilities and make complicated connections due to this interconnection.
Quantum computers excel at drug discovery, materials science, and complicated system simulations, where traditional computers fail. Their capacity to control entangled qubits in superposition allows them to compute enormous quantities of data in simultaneously and explore several solutions.
Subatomic Particle Qubit Benefits
Neutral atoms and trapped ions can be isolated well due to long coherence times. Due to their isolation, they can maintain their quantum state for a long period. This significantly reduces computation errors.
Quantum operations (gates) can be performed with exceptionally high accuracy and low error rates due to their inherent similarity and laser-controlled precision.
Even though scaling is a difficulty for all quantum computers, ion traps can be used to create larger systems by adding ions.
Subatomic Particle Qubit Drawbacks
Subatomic particles can maintain long coherence times, but they are sensitive to environmental noise including heat, magnetic fields, and stray light. Vacuum-controlled conditions must be maintained throughout the system.
Complex Infrastructure: Subatomic particle control is costly and difficult. They are difficult to create and run because they require a complex laser network, accurate vacuum chambers, and cryogenic refrigeration.
It takes time and effort to read out the qubits’ final state. The process of shining a laser on the particle and measuring the fluorescence is lengthy and error-prone.
