For organizations operating at the highest levels of security classification, intellectual property sensitivity, or scientific rigor, shared quantum infrastructure is simply not an option. The k&z Dedicated Single-Tenant QPU product delivers an entire quantum processing unit — from the dilution refrigerator and qubit chip through the classical control electronics and network edge — exclusively to a single client. No other workloads touch your hardware. No other organization's circuits run on your qubits. No shared calibration data, no multiplexed control lines, no cross-tenant electromagnetic interference. The system is yours alone, operating in a physically isolated rack within a secured facility zone that only your authorized personnel and k&z cleared technicians may access.
This level of isolation produces measurable performance advantages beyond security. When a QPU serves only one tenant, calibration can be optimized specifically for that tenant's workload characteristics. If your research focuses on quantum chemistry circuits with deep CNOT chains, we tune two-qubit gate parameters and dynamical decoupling schedules to maximize fidelity for that specific circuit topology. If you are running quantum error correction experiments requiring rapid mid-circuit measurement and feed-forward, we configure readout discriminators and feedback latencies for your syndrome extraction patterns. This workload-specific tuning, impossible on shared multi-tenant systems, typically improves effective circuit fidelity by 15-30% compared to generic calibration profiles.
The Dedicated Single-Tenant QPU is housed in its own dilution refrigerator system with an independent helium-3/helium-4 mixture circuit, dedicated pulse-tube cryocooler, and isolated vibration damping platform. The cryogenic system maintains a base temperature of approximately 10 millikelvin — slightly colder than our shared QPU Blocks — because the thermal load of a single-tenant configuration is lower and more predictable. This colder operating temperature directly translates to longer T1 relaxation times (typically 400-600 microseconds) and improved T2 coherence (300-500 microseconds), giving your circuits more time to execute before decoherence degrades results.
Physical security is a foundational design principle of the Dedicated Single-Tenant QPU, not an afterthought. Each single-tenant system resides in a dedicated cage within k&z's secure facility, equipped with biometric access controls, 24/7 video surveillance with 90-day retention, tamper-evident seals on all hardware enclosures, and independent environmental monitoring. For clients requiring SCIF-equivalent protections or compliance with NIST SP 800-171 / CMMC Level 3 frameworks, we offer enhanced security packages that include RF shielding, TEMPEST countermeasures, and dedicated secure network enclaves with no internet connectivity.
Key Capabilities
Complete Physical Isolation
Your QPU operates in its own dedicated dilution refrigerator, control rack, and network segment. No hardware components are shared with any other client. The cryogenic system, microwave control electronics, FPGA pulse sequencers, and readout amplifiers are exclusively yours, eliminating all vectors for cross-tenant interference, data leakage, or performance degradation caused by neighboring workloads.
Workload-Optimized Calibration
Our quantum engineering team tunes every parameter of your QPU — qubit frequencies, anharmonicities, coupling strengths, readout integration windows, and dynamical decoupling sequences — specifically for your dominant circuit topologies and algorithmic patterns. Calibration schedules are customized to your operational tempo, with on-demand recalibration available at any time through the management console.
Enhanced Coherence Performance
Single-tenant cryogenic systems operate at lower base temperatures (~10 mK vs. ~15 mK) due to reduced thermal loading, delivering T1 times of 400-600 microseconds and T2 times of 300-500 microseconds. This 30-50% coherence improvement over shared configurations enables deeper circuit execution and higher-fidelity results for demanding algorithms like quantum phase estimation and quantum error correction.
Military-Grade Physical Security
Dedicated cage with biometric access, 24/7 surveillance, tamper-evident hardware seals, and independent environmental monitoring. Optional TEMPEST/RF shielding packages, SCIF-equivalent configurations, and air-gapped network enclaves for clients operating under ITAR, EAR, or classified program requirements. All facility staff hold appropriate security clearances.
Dedicated Support & Engineering
Each single-tenant client is assigned a named quantum systems engineer who understands your hardware configuration, calibration history, and research objectives. Your engineer provides proactive performance monitoring, anomaly investigation, and quarterly hardware health reviews. Priority escalation paths ensure that any issue affecting your QPU is addressed within the contracted SLA response window.
Custom Qubit Topology Options
For clients committing to multi-year engagements, k&z offers custom qubit chip fabrication with topology optimizations tailored to your specific computational requirements. Choose from heavy-hex, square-lattice, or application-specific connectivity graphs. Custom chips are fabricated in our partner foundry and undergo the same rigorous characterization and acceptance testing as standard production chips.
Technical Specifications
| Parameter | Specification |
|---|---|
| Qubit Count | 256, 512, or 1,024 physical qubits (configuration selected at provisioning) |
| Qubit Type | Superconducting transmon (fixed-frequency or tunable, client choice) |
| Single-Qubit Gate Fidelity | ≥ 99.97% (workload-optimized calibration) |
| Two-Qubit Gate Fidelity | ≥ 99.8% (workload-optimized calibration) |
| T1 Coherence Time | 400–600 μs (median, single-tenant thermal environment) |
| T2 Coherence Time | 300–500 μs (echo-based, single-tenant thermal environment) |
| Readout Fidelity | ≥ 99.7% (optimized dispersive readout with Purcell filter) |
| Base Temperature | ~10 mK (dedicated dilution refrigerator) |
| Mid-Circuit Measurement | Supported (feed-forward latency < 400 ns) |
| Physical Security | Dedicated cage, biometric access, 24/7 surveillance, tamper-evident seals |
| Network Isolation | Dedicated VLAN with optional air-gap configuration |
| Compliance Frameworks | NIST SP 800-171, CMMC Level 3, SOC 2 Type II, ISO 27001 |
| Availability SLA | 99.5% uptime (excluding scheduled maintenance windows) |
| Contract Terms | 12-month minimum commitment; 24- and 36-month terms available |
| Calibration | Workload-optimized, continuous; on-demand recalibration via console |
Ideal For
- Government defense and intelligence programs — Agencies operating under ITAR, EAR, or classified program requirements that mandate complete physical and logical isolation of computing resources, including quantum processors used for cryptanalysis research, optimization of defense logistics, and national security simulations.
- Big Tech R&D laboratories — Technology companies developing proprietary quantum algorithms, custom error correction codes, or quantum-enhanced AI models that represent significant competitive advantages and require hardware environments free from any risk of intellectual property exposure.
- Pharmaceutical and biotech research — Drug discovery programs using quantum chemistry simulations to model protein folding, molecular interactions, and reaction mechanisms where reproducible, high-fidelity results across multi-month experimental campaigns are essential for regulatory submissions.
- Financial institutions — Banks, hedge funds, and trading firms exploring quantum advantage for portfolio optimization, risk modeling, and derivative pricing that handle market-sensitive data requiring strict isolation and auditability.
- National laboratories and academic consortia — Multi-year quantum computing research programs funded by government agencies that require dedicated hardware access, predictable capacity planning, and compliance with federal research data management policies.
- Quantum error correction researchers — Teams developing and benchmarking novel QEC codes that require full control over the hardware calibration, the ability to implement custom syndrome extraction circuits, and guaranteed coherence baselines that only single-tenant operation can provide.
Provisioning a Dedicated Single-Tenant QPU typically requires a 4-6 week lead time for standard configurations or 8-12 weeks for custom qubit topologies. During provisioning, our quantum engineering team works closely with your technical leads to define calibration targets, security configurations, network topology, and integration requirements. A comprehensive acceptance test — including full process tomography, coherence mapping, and crosstalk characterization — is performed jointly with your team before the system enters production service.
To discuss your requirements and begin the provisioning process, contact our enterprise quantum solutions team. We will schedule a technical consultation to assess your workload characteristics, security requirements, and performance targets, then deliver a detailed proposal including hardware configuration, facility security plan, and commercial terms.