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In the worldwide race towards quantum computers with groundbreaking applications, challenges have to be overcome:
1) improving the quality of qubits and operations, 2) scaling up the number of qubits, 3) harnessing algorithms with quantum error correction and error mitigation strategies.
Crucial in quantum computing is the control stack that generates control signals and interprets algorithm outcomes.
Qblox overcomes the three challenges by building control stacks that combine unleveled noise performance, a low-latency arbitrary control flow and scalability up to 100s of qubits.
We are supporting quantum revolutions worldwide with our dedicated qubit control equipment and are ready to speed up yours.
Massively scalable qubit control architecture from Ultrastable DC up to 18.5 GHz
A variety of quantum chips are pursued, for instance, based on superconducting circuits, quantum dots, NV centers, trapped ions or topological systems.
In most setups, a quantum chip is hosted in a cryostat to reach a chip temperature close to 0 K in order to suppress noise.
Users interface via a high-level portal to execute a quantum algorithm. The Qblox control stack is required to translate the high-level calibration routines and algorithms to specific low-level analog signals.
Signals are finally sent back to the Qblox control stack and retranslated into digital outcomes for analysis and interpretation.
The Cluster Series adapts to a variety of applications and is the ideal modular hardware choice for quantum setups scaling from a handful towards 100s of qubits. Control and readout tasks are assigned to different modules which operate at the baseband (0-400 MHz) or in the microwave regime (2-18.5 GHz).
Qblox quantum control stacks integrate all instrumentation and software needed to control and readout qubits. Our full-stack approach speeds up experiments by orders of magnitude and facilitates NISQ applications.
At the core of Qblox technology lies the Q1 advanced sequence processor, and the proprietary SYNQ and LINQ protocols. The speed up is achieved by real-time pulse parametrization that reduces the large overheads caused by software controlled loops, and the active reset protocol that leaves behind conventional qubit initialization methods.
Qblox introduces fast scalable feedback to open the door for real-time error correction algorithms that can be seamlessly scaled to >1000 qubits. The proprietary backplane protocols SYNQ and LINQ ensure all channels and modules to act as one monolithic system with full deterministic timing and allowing low-latency feedback within 364 ns.
The SYNQ protocol organizes a synchronized start to ensure fully deterministic timing of all outgoing signals. It synchronizes all analog and digital channels mounted in a mainframe and also in between multiple frames. down to picoseconds level.
The LINQ protocol distributes measurement outcomes to all modules to allow low-latency feedback. Fast feedback functionalities allow applying pulses and pulse parameter updates conditioned on the measurement results from the readout module.
Together with the Open-source software platform Quantify it ensures easy operations and optimized arbitrary control flows.