Horizon Quantum Computing
 | |
| Status | Active |
|---|---|
| Website | https://www.horizonquantum.com/ |
| Vertical(s) | Quantum computing |
| Latest Funding Round | Series A |
| Year founded | 2018 |
| Headquarters | Singapore |
| Technology Readiness Level | Development (TRL 4-6) |
Horizon Quantum Computing is a Singapore-based startup developing tools to simplify and accelerate the development of Quantum software applications.
The firm is preparing for a special purpose acquisition company (SPAC) listing on the Nasdaq in early 2026. In December 2025, their estimated valuation was $503 million.
Technology
The startup is developing a toolchain that transforms classical computing programs into accelerated quantum applications[1]. This is done through automated algorithm synthesis that produces a high-level descriptions of quantum programs for a given task, which is then paired with an optimising complier that produces processor-specific executable representation.
They have developed their own IDE, Triple Alpha, that allows developers to code, quantify, compile and deploy applications on quantum computers.
Traction
In December 2025, Horizon Quantum Computing announced it's own self-assembled two-tonne quantum computer[2]. This quantum computer would serve as a test bed for clients and its own solutions.
Funding
In December 2025, Horizon Quantum and dMY Squared announced that they have entered into subscription agreements with investors for a $110 million PIPE financing[3].
The startup raised their US$18.1 million Series A in 31 March 2023[4].
A Seed+ round led by Sequoia Capital India was closed in June 2020[5].
Horizon Quantum raised their Seed round in November 2018, which was lead by SGInnovate[6].
| Funding History | |
|---|---|
| Investor | Round |
| Sequoia Capital India | Series A |
| Tencent | Series A |
| SGInnovate | Series A |
| Pappas Capital | Series A |
| Expeditions Fund | Series A |
| Sequoia Capital India | Seed+ |
| SGInnovate | Seed+ |
| Abies Ventures | Seed+ |
| DCVC | Seed+ |
| Qubit Protocol | Seed+ |
| Summer Capital | Seed+ |
| Posa CV | Seed+ |
| Sequoia Capital India | Seed |
| SGInnovate | Seed |
| Abies Ventures | Seed |
| DCVC | Seed |
| Qubit Protocol | Seed |
| Summer Capital | Seed |
| Posa CV | Seed |
Note: This list is community-maintained and may be incomplete or contain inaccuracies.
References
- ↑ "Horizon Quantum - Technology". www.horizonquantum.com. Retrieved 2025-12-19.
- ↑ "Quantum software firm in S'pore gets boost in real-world testing with its own quantum computer". The Straits Times. 2025-12-17. ISSN 0585-3923. Retrieved 2025-12-19.
- ↑ "Horizon Quantum Computing Pte. Ltd. and dMY Squared Technology Group, Inc. Announce $110 Million PIPE Investment to Support Proposed Business Combination". www.horizonquantum.com. Retrieved 2025-12-19.
- ↑ "Horizon Quantum". www.horizonquantum.com. Retrieved 2025-12-19.
- ↑ Punay, Nathanielle (2020-06-23). "IT startup Horizon Quantum Computing ups seed round to $4.5m | Singapore Business Review". sbr.com.sg. Retrieved 2025-12-19.
- ↑ "Horizon Quantum". www.horizonquantum.com. Retrieved 2025-12-19.