About Thrust 2
Long-distance quantum communications networks over optical fibers will require fault-tolerant quantum repeaters. These quantum repeaters are special-purpose quantum processors that enable high-speed communication of the quantum states of entangled qubits over continental distances. The quantum repeater and its key subcomponents will be tested, validated and improved in both of the CQN testbeds (in Tucson and Boston).
Thrust 2 Projects
Integrated Photonic Devices
- Demonstrating quantum repeater node functionalities using single optically active defects in diamond coupled to nanophotonic diamond cavities
- Proposing architectures for quantum random access memory (qRAM)
- An efficient free-space interface to closely packed arrays of quantum memories for multiplexed quantum repeaters
- Efficient, scalable fiber-to-chip interface at cryogenic temperature
Quantum Error Correction
- Quantum error correction based on specific physical encodings of the code qubits
- Coherent manipulation of graph states composed of finite-energy GKP-encoded qubits
- Universal interference-based construction of Gaussian operations in hybrid quantum systems
- Quantum limits of superresolution in a noisy environment
- Single-versus-dual encoding of photons in generating the entangled link
Distillation, Computing, and Communications
- Resilience of quantum random access memory to generic noise
- Quantum metrological power of continuous-variable quantum networks
Quantum Repeaters
- Quantum repeaters based on concatenated bosonic and discrete-variable quantum codes
Thrust 2 Lead
Liang Jiang
Professor of Molecular Engineering
University of Chicago, Pritzker School of Molecular Engineering
Thrust 2 Pillar Integration
Research
- Device requirements (T3)
- Repeater Capabilities (T1)
- Realistic Device Capabilities (T3)
- Needs from Network Architecture (T1)
Diversity & Culture of Inclusion
- QuEST Participation
- Diverse student recruitment
- Mentoring
Engineering Workforce Development
- Hands-on interdisciplinary training, cross cutting theory and experiments
- Innovative EWD content
Innovation Ecosystem
- Supplier of high-performance devices, new business opportunities
- Inventions & patents: routers, entanglement, sources, codes