Compact and versatile quantum computer

XQ1 is a room-temperature diamond quantum processor built for research, teaching, algorithm development, and quantum applications.

XQ1 quantum processor in a dark studio setting, AI-enhanced product image
XQ1 · Mobile diamond quantum processor
Quantum register
4+ spin qubits
Operation
Room temperature
Control
Gate- and pulse-level access
Interface
Python and Qiskit

Built for hands-on education and research.

Operate the quantum computer on premises or remotely without a cryogenic cooling system. XQ1 combines room-temperature operation with automated setup and standard network connectivity.

Operation
Room temperatureNo complex cooling infrastructure
Readiness
Under 5 minutesFrom startup to operational readiness
Automation
Automatic alignment and calibrationDesigned for robust operation
Footprint
Fits under your deskA compact on-premises system
Connectivity
Wi-Fi and LANFlexible network integration
Integration
High-performance computingCompatible with HPC systems

Start with circuits. Go down to pulses.

XQ1 supports high-level quantum workflows and direct experimental control. Its open software environment is designed for customization and expansion.

Circuit layer
Python and QiskitBuild quantum circuits through a Python interface and Jupyter notebooks using Qiskit-compatible workflows.
Pulse layer
Control on all qubitsMove below circuit abstractions to shape pulses and work directly with the physical register.
Experiment layer
Prepare, calibrate, and read outDevelop experiments around calibration, state preparation, and readout on working hardware.

Electron and nuclear spins in diamond.

XQ1 uses one nitrogen-vacancy (NV) center in diamond. Its electron spin couples to the nitrogen nuclear spin and two or more carbon nuclear spins through hyperfine interactions, forming a star-shaped register topology.

How the technology works
XQ1 star topology: one electron spin labelled e, coupled to one nitrogen (N) and two illustrative carbon (C) nuclear spins.
e Electron spin N 14N nuclear spin C 13C nuclear spin

XQ1 hardware in research and teaching environments.

Public evidence of XeedQ’s diamond quantum computer operating at customer sites.

Ulm · 2023

DLR Quantum Computing Initiative

XeedQ delivered the 4-qubit XQ1i to the DLR Innovation Center in Ulm.

DLR report

Frankfurt · 2024

Goethe University Frankfurt

Goethe University inaugurated the 5-qubit “Baby Diamond” system for research and teaching.

Installation report

Dresden · 2025

TU Dresden

TU Dresden opened a laboratory with three interconnected quantum computers, realized in cooperation with XeedQ and TU Munich.

TU Dresden report

Published research on XQ1.

Published work on XQ1 covers state readout, operating stability, and quantum algorithms.

State readoutarXiv:2606.23454

Improved State Readout in NV Centers using Regression Models and Rabi Driving

Read the paper

Operating stabilityarXiv:2506.20348

Predictive tracking of the NV Center based on external temperature sensors

Read the paper

Quantum algorithmsarXiv:2604.00949

Two-Qubit Implementation of QAOA for MAX-CUT on an NV-Center Quantum Processor

Read the paper

Bring XQ1 into your research workflow.

Talk to XeedQ about technical specifications, a demonstration, or remote access to working quantum hardware.