Photonic Hybrid Quantum Computing
arXiv:2510.00534 · doi:10.1016/j.newton.2025.100359
Abstract
Photons are a ubiquitous carrier of quantum information: they are fast, suffer minimal decoherence, and do not require huge cryogenic facilities. Nevertheless, their intrinsically weak photon-photon interactions remain a key obstacle to scalable quantum computing. This review surveys hybrid photonic quantum computing, which exploits multiple photonic degrees of freedom to combine the complementary strengths of discrete and bosonic encodings, thereby significantly mitigating the challenge of weak photon-photon interactions. We first outline the basic principles of discrete-variable, native continuous-variable, and bosonic-encoding paradigms. We then summarise recent theoretical advances and state-of-the-art experimental demonstrations with particular emphasis on the hybrid approach. Its unique advantages, such as efficient generation of resource states and nearly ballistic (active-feedforward-free) operations, are highlighted alongside remaining technical challenges. To facilitate a clear comparison, we explicitly present the error thresholds and resource overheads required for fault-tolerant quantum computing. Our work offers a focused overview that clarifies how the hybrid approach enables scalable and compatible architectures for quantum computing.
22 pages, 5 figures
References in corpus (67)
- Review article: Linear optical quantum computing
- Logical quantum processor based on reconfigurable atom arrays
- Universal Quantum Computation with Continuous-Variable Cluster States
- Programmable Quantum Simulations of Spin Systems with Trapped Ions
- Resource-efficient linear optical quantum computation
- Dynamically protected cat-qubits: a new paradigm for universal quantum computation
- Generation of a superposition of odd photon number states for quantum information networks
- Ultra-Large-Scale Continuous-Variable Cluster States Multiplexed in the Time Domain
- Time-Domain Multiplexed 2-Dimensional Cluster State: Universal Quantum Computing Platform
- Hybrid quantum information processing
- Deterministic generation of a two-dimensional cluster state
- Real-time quantum error correction beyond break-even
- A fault-tolerant one-way quantum computer
- Quantum Computing with Continuous-Variable Clusters
- Performance and structure of single-mode bosonic codes
- Fault-tolerant linear optical quantum computing with small-amplitude coherent states
- Hybrid quantum repeater using bright coherent light
- Hardware-efficient autonomous quantum error correction
- Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer
- Deterministic quantum teleportation of photonic quantum bits by a hybrid technique
- Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction
- Remote creation of hybrid entanglement between particle-like and wave-like optical qubits
- Entangling quantum and classical states of light
- From three-photon GHZ states to ballistic universal quantum computation
- Breeding the optical Schroedinger's cat state
- 3/4-efficient Bell measurement with passive linear optics and unentangled ancillae
- Fast Universal Control of an Oscillator with Weak Dispersive Coupling to a Qubit
- Progress towards practical qubit computation using approximate Gottesman-Kitaev-Preskill codes
- Propagating Gottesman-Kitaev-Preskill states encoded in an optical oscillator
- All-optical generation of states for "Encoding a qubit in an oscillator"
- Generating Grid States From Schrödinger Cat States without Post-Selection
- A Hybrid Long-Distance Entanglement Distribution Protocol
- Deterministic implementation of weak quantum cubic nonlinearity
- A scheme for quantum teleportation between discrete and continuous encodings of an optical qubit
- Connecting heterogeneous quantum networks by hybrid entanglement swapping
- Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences
- Noise thresholds for optical cluster-state quantum computation
- Entanglement and teleportation between polarization and wave-like encodings of an optical qubit
- Optical Quantum Computation
- Fault-tolerant quantum computation with static linear optics
- Beating the One-half Limit of Ancilla-free Linear Optics Bell Measurements
- A Photonic Implementation for the Topological Cluster State Quantum Computer
- Quantum tele-amplification with a continuous variable superposition state
- Resource-efficient and fault-tolerant topological quantum computation with hybrid entanglement of light
- Nearly Deterministic Bell Measurement for Multiphoton Qubits and Its Application to Quantum Information Processing
- Quantum teleportation between "particle-like" and "field-like" qubits using hybrid entanglement under decoherence effects
- Fault-tolerant quantum computation with non-deterministic entangling gates
- Generation of hybrid entanglement between a single-photon polarization qubit and a coherent state
- All-photonic architectural roadmap for scalable quantum computing using Greenberger-Horne-Zeilinger states
- A quantum-bit encoding converter
- Deterministic generation of a four-component optical cat state
- Efficient backcasting search for optical quantum state synthesis
- Loss-resilient photonic entanglement swapping using optical hybrid states
- High photon-loss threshold quantum computing using GHZ-state measurements
- Quantum teleportation between a single-rail single-photon qubit and a coherent state qubit using hybrid entanglement under decoherence effects
- Fault Tolerance in Parity-State Linear Optical Quantum Computing
- Highly photon loss tolerant quantum computing using hybrid qubits
- A local and scalable lattice renormalization method for ballistic quantum computation
- Fault-tolerant quantum computation by hybrid qubits with bosonic cat-code and single photons
- Two different types of optical hybrid qubits for teleportation in a lossy environment
- Universal quantum computation with optical four-component cat qubits
- Encoded-Fusion-Based Quantum Computation for High Thresholds with Linear Optics
- Long-distance entanglement sharing using hybrid states of discrete and continuous variables
- Quantum teleportation of hybrid qubits and single-photon qubits using Gaussian resources
- Parity-encoding-based quantum computing with Bayesian error tracking
- Switching-free time-domain optical quantum computation with quantum teleportation
- Loss-tolerant transmission of multiphoton-qubit information via hybrid entanglement