P
Phasecraft
Quantum algorithms accelerating real-world computational applications
About Phasecraft
Phasecraft operates at the intersection of academic theory and commercial application in the quantum computing sector, focusing on the development of high-efficiency quantum algorithms. Founded in 2019 as a spin-out from University College London (UCL) and the University of Bristol, the company was established by three distinguished quantum scientists: Professor Ashley Montanaro, who serves as CEO; Professor Toby Cubitt, the CTO and Chief Science Officer; and Professor John Morton. Their collective journey stems from extensive academic careers, with each founder having over 20 years of research experience in quantum computation, quantum information theory, and mathematical physics. The decision to create a startup was driven by the realization that quantum hardware was advancing to a point where it could move beyond experimental stages, creating a pressing need for sophisticated software to harness its power for practical problems.
Read full description
The company's core business is to design quantum algorithms that significantly reduce the hardware requirements—such as the number of qubits and circuit depth—needed to solve complex problems, thereby accelerating the timeline to achieving quantum advantage. Phasecraft's revenue model is centered on partnerships with both quantum hardware manufacturers and companies in various industries that stand to benefit from quantum computation. By collaborating with hardware leaders like Google, IBM, Rigetti, Quantinuum, and QuEra, Phasecraft gains access to the most advanced quantum processors to test and refine its algorithms. This positions them to co-develop solutions for enterprise clients in sectors like materials science, pharmaceuticals, and telecommunications. Their clients are companies facing computational challenges that are intractable for even the most powerful classical supercomputers, such as discovering new materials for batteries and solar cells or optimizing complex networks.
Phasecraft's primary offering is its intellectual property in the form of novel quantum algorithms. These algorithms are engineered to perform specific, high-value computational tasks with greater efficiency than existing methods. For example, their work has demonstrated the ability to reduce the complexity of simulating a materials system by a factor of 400,000 and has resulted in the largest-ever materials system simulation on actual quantum hardware. A notable product of their research is an algorithm named THRIFT, which improves the efficiency of simulating dynamic quantum systems by a factor of 10, allowing for simulations on near-term hardware that are significantly larger and longer-running. This focus on making today's 'noisy,' intermediate-scale quantum computers useful is a key differentiator, bridging the gap between current hardware limitations and future fault-tolerant machines. The company has secured significant funding, including a £13m Series A round, to expand its world-class team and further its research.
At a glance
- Status
- Operational
- Founded
- 2018
- Headquarters
- London, United Kingdom
- Employees
- 51
- Open positions
- 6
- Dealroom signal
- 90.4/100
- Sector
- Other B2B Software, Quantum Computing, Spinout, Quantum Computing Software, Future of Computing, Hard Tech, NIF defense security and resilience, NIF quantum, slush24, NIF Security of Critical Technologies, DT and LS
- Technology
- Deep Tech, Quantum Technologies
- Business model
- SaaS
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| GRANTOther financing | Jan 2026 | $462K | — | UK Research and Innovation | — |
| SERIES BOther financing | Sep 2025 | $33M | $133M | Novo Holdings · Playground Global · Plural | ↗ |
Financials
Revenue, earnings and other financial measures where available. Years marked “E” are estimates.
Growth signals
Latest recorded traffic for Phasecraft is 8.5K monthly website visits, up 63.5% over the last three months. Phasecraft's team grew 18.6% over the past year.
Open positions
Similar companies
Company identity and context are open; selected comparison metrics preview what is available on the platform.
Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed6 investors entered at this stage
AlbionVC
Parkwalk Advisors
UCL Technology Fund
LocalGlobe
Episode 1 Ventures
UK Research and Innovation
Series A4 investors entered at this stage
Playground Global
London Co-Investment Fund
Plural
Novo Holdings
Other known investors2 additional known investors
University College London
University of Bristol
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Phasecraft on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
See Phasecraft’s full profile on Dealroom
Request a free trial to see the complete deal history, financials, people graph and growth signals.
Takes under a minute. Already use Dealroom? Log in.







