Who is Alice & Bob?
Alice & Bob is a quantum hardware company focused on building fault-tolerant quantum processors based on superconducting cat qubits for error-corrected quantum computing.
- Development of cat qubit-based superconducting quantum processors (quantum computing hardware)
- Research and engineering of fault-tolerant architectures for error-corrected quantum computation (quantum error correction)
- Design of hardware and control stacks compatible with existing quantum computing software ecosystems (quantum platforms)
- Collaboration with academic and industrial partners on quantum algorithm deployment over error-corrected hardware (quantum applications)
- Provision of technical resources explaining cat qubits, bosonic codes, and error correction approaches for enterprise and research users (technical enablement)
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More About Alice & Bob
Alice & Bob focuses on building quantum processors that implement bosonic cat qubits using superconducting circuits, with the objective of realizing fault-tolerant, error-corrected quantum computing for enterprise and institutional workloads.
The company’s approach centers on hardware-native Quantum Error Correction (QEC), where logical qubits are encoded in microwave photons stored in superconducting resonators, using so-called cat states to suppress bit-flip errors at the physical level and reduce the overhead required for full error correction.
In this architecture, each cat qubit is engineered to have an inherent protection mechanism against one class of errors, which allows the logical qubit to be stabilized by continuous or discrete-time error-correcting operations that target the remaining error channels, fitting into broader QEC frameworks such as bosonic codes and stabilizer code constructions (quantum error correction frameworks).
The hardware stack relies on superconducting circuit technology operated at cryogenic temperatures, coupled with control electronics that generate and measure microwave signals to initialize, manipulate, and read out cat qubits (quantum control systems), aligning with practices used across superconducting quantum computing platforms.
Alice & Bob positions its systems for use cases where long algorithmic depth and reliability are required, such as quantum simulation, optimization, and certain cryptographic or chemistry workloads, in contexts where error-corrected logical qubits are expected to be more resource-efficient than unprotected qubits of comparable physical scale.
From an enterprise architecture perspective, Alice & Bob fits into quantum computing infrastructure categories that can be accessed via cloud-based or hybrid environments, where quantum processors are exposed through standard software interfaces, SDKs, and APIs compatible with common quantum programming paradigms (quantum platform integration).
The company publishes conceptual and technical materials that describe how cat qubits differ from traditional two-level superconducting qubits, how bosonic encodings can alter resource estimates for fault tolerance, and how these design choices affect the expected logical error rates and qubit counts required for target algorithms, allowing technical stakeholders to evaluate deployment scenarios and integration paths.
Within a directory or marketplace taxonomy, Alice & Bob can be classified under quantum hardware providers, with subcategorization under superconducting quantum processors, error-corrected quantum computing platforms, and quantum Research and Development (R&D) services.
Our description of Alice & Bob. Updated December 2025.
