What S-fifteen Instruments Pte. Ltd. does

S-Fifteen Instruments Pte. Ltd. is a Singapore-based private company founded in 2017 that designs and manufactures photonic quantum hardware and precision control instrumentation for academic and research customers. The company operates with a small team of 1-10 employees from its headquarters at Blk 81 Ayer Rajah Crescent in Singapore's research corridor. Its commercial focus is squarely on the upstream R&D layer of the quantum information science stack rather than commercial quantum communications infrastructure.

The product portfolio is organized into two categories. The Quantum Technologies line comprises the QKD v0.2 Quantum Key Distribution System, the EKPQC Quantum Cryptography Educational Kit, the EPPS-O Entangled Photon Pair Source (O-band), the CPPS-810 Correlated Photon Pair Source (810nm), the IRSPD1 Infrared Single-Photon Detector, the Si-APD Visible Single-Photon Detector, the SPC Single Photon Counter, and the QRNG1 Quantum Random Number Generator. The Control & Measurement Instrumentation line includes the DPG1 25-channel Digital Pattern Generator (with a 512-state engine), TDC1/TDC2 Time-to-Digital Converters (up to 2ns resolution), NIM signal processing modules (NIMVETO, NIMFANOUT, UD), DDG Digital Delay, DDS1 Direct Digital Synthesizer, RFGBK RF Gain Block Kit, OPMSI/OPMGE optical power meters, SPS Single Photon Spectrometer, and DLD Laser Diode Driver. Modular instruments are housed in Eurocard-format racks (RACK3U42HP, RACK3U84HP) and communicate via USB-serial with open-source Python drivers available on GitHub under MIT License.

S-Fifteen sells primarily through a Shopify-powered direct e-commerce website to research institutions globally, supplemented by an exclusive distribution partnership with P & B Technologies Co., Ltd. for the China market. Pricing is contact-based for most products, with select units disclosed (TDC1 at $2,000 SGD). Customer engagement is concentrated at academic quantum physics conferences and symposiums across Southeast Asia, East Asia, and South Asia — including the 10th National Young Quantum Symposium (Hangzhou, 2026), Institute of Physics Singapore Meeting (2025), and Quantum India Bengaluru (2025). The company is led by Managing Director Brenda Chng and receives non-financial support from Ecosperity.

Name

S-fifteen Instruments Pte. Ltd.

Legal name

S-Fifteen Instruments Pte. Ltd.

Website

https://s-fifteen.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

S-Fifteen Instruments Pte. Ltd. designs and manufactures photonic quantum hardware — including correlated photon pair sources, single photon detectors, QKD systems, and precision timing/control electronics — and sells it primarily to academic quantum physics research institutions via direct e-commerce and selective regional distribution.

Ownership category

akta.pro rank

Product category

Quantum Optics Instrumentation

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Optical Instruments & Lenses (3827), Laboratory Analytical Instruments (3826)

akta.pro primary industry

Quantum Transceivers, Modems & Photonic Interfaces (HDAGAFAE)

akta.pro secondary industries

Pulse-Level Compilation & Control Stack Integration (HDAGAKAC), Quantum Education & Certification Programs (HDAGALAA)

Keywords

• Quantum key distribution
• Single photon detectors
• Photon pair sources
• Precision timing instruments
• Quantum optics hardware

Headquarters

HQ city

Singapore

HQ country

Singapore

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Quantum Technology Hardware: Sale of specialized quantum optics instruments including photon pair sources, single photon detectors, quantum key distribution systems, and quantum random number generators. These are typically high-value precision instruments sold to research institutions.
2. Control & Measurement Instrumentation: Sale of precision electronic instruments including digital pattern generators, time-to-digital converters, delay generators, RF devices, optical power meters, and spectrometers. Products sold as modular units or complete systems.

Pricing tiers

Go-to-market motion3 records

Distribution channels2 records

Marketing channels5 records

Core offering

S-Fifteen Instruments designs, manufactures, and sells specialized quantum optics hardware — including correlated and entangled photon pair sources, single photon detectors, quantum key distribution systems, and quantum random number generators — alongside precision control and measurement instrumentation (digital pattern generators, time-to-digital converters, RF and optical instruments, NIM signal modules, and Eurocard rack systems). Products are sold as modular units or complete systems to quantum physics research laboratories and universities via direct e-commerce and exclusive regional distributors.

Product overview

S-Fifteen Instruments Pte. Ltd. is a quantum technology and precision instrumentation company offering a portfolio of specialized hardware products organized into two main categories: Quantum Technologies and Control & Measurement Instrumentation. The Quantum Technologies line includes quantum key distribution systems (QKD v0.2), the EKPQC educational kit for quantum cryptography training, entangled and correlated photon pair sources (EPPS-O, CPPS-810) for quantum information experiments, and single photon detectors covering infrared (IRSPD1) and visible (Si-APD, SPC) wavelengths. The Control & Measurement Instrumentation category provides precision electronic instruments for quantum optics experiments including the DPG1 digital pattern generator for pulse sequencing, time-to-digital converters (TDC1, TDC2) for photon detection timing, NIM signal processing modules (NIMFANOUT, NIMVETO, UD), RF synthesis and amplification (DDS1, RFGBK), digital delay (DDG), and optical measurement tools (OPMSI silicon power meter, OPMGE germanium power meter, SPS spectrometer, DLD laser driver). All modular instruments are designed as Eurocard-format units powered by compatible rack systems (RACK3U42HP, RACK3U84HP). Products communicate via USB-serial interface with open-source Python scripts provided on GitHub.

Differentiator

Problem solved

Functional benefit

Products and services

• QKD v0.2 (Quantum Key Distribution System v0.2) Quantum Key Distribution System enabling secure communication through quantum cryptography protocols, designed for quantum communication and quantum cryptography research applications.
• EKPQC (Quantum Cryptography Educational Kit) Educational kit designed for teaching quantum cryptography principles and conducting laboratory exercises, targeted at university teaching programs and physics instructors.
• EPPS-O (Entangled Photon Pair Source O-Band) Entangled photon pair source operating in the O-band wavelength range for quantum information applications and entanglement experiments.
• CPPS-810 (Correlated Photon Pair Source 810nm) Correlated photon-pair source generating time-correlated photon pairs at 810nm via Type-I spontaneous parametric downconversion in a BBO crystal, outputting >10,000 photon pairs per second with >25% heralding ratio and CAR >500.
• IRSPD1 (Infrared Single-Photon Detector) Single-photon detector optimized for infrared wavelength detection in quantum optics applications.
• Si-APD (Visible Single-Photon Detector) Silicon avalanche photodiode-based single-photon counting module for visible wavelength detection in quantum optics experiments.
• SPC (Single Photon Counter) Single photon detector with integrated time-to-digital converter (TDC1), featuring approximately 60% photo detection efficiency at 808nm and 2ns timestamp resolution.
• QRNG1 (Quantum Random Number Generator) Quantum random number generator utilizing quantum phenomena to produce true random numbers for security and cryptographic applications.
• G2 Bundle Bundled turnkey measurement package combining one CPPS-810 Correlated Photon Pair Source and two SPC Single Photon Counter units for second-order time correlation (G2) experiments.
• DPG1 (Digital Pattern Generator) Multi-channel digital pattern generator driving up to 25 digital channels as a pulse sequencer with a state engine of up to 512 states and conditional jumps, designed for pulse control of quantum information processing systems.
• NIMVETO (NIM Anti-Coincidence) Anti-coincidence stage for suppressing NIM pulses from detectors or generating short pulses from initial NIM pulses and delayed copies, featuring 700ps rise/fall time and 50ps jitter.
• NIMFANOUT (NIM Fanout) Signal fanout module that regenerates and distributes NIM signals into 3 copies per unit while preserving fast-rising edges for timing-sensitive applications.
• UD (Universal Discriminator) Dual-channel discriminator with programmable threshold from -2V to +2V for converting pulses into NIM or TTL-compatible digital signals with selectable polarity.
• DDG (Digital Delay Generator) Digital delay generator for precise timing control in experimental setups.
• DDS1 (Direct Digital Synthesizer) Dual-channel RF synthesizer providing sinusoidal signals from 100kHz to 250MHz with support for AM, FM, and PM modulation modes, designed for controlling acousto-optic modulators.
• RFGBK (RF Gain Block Kit) Wideband amplifier kit based on Minicircuits gain blocks (MAR/ERA families) covering frequencies from kHz to GHz range, with customizable frequency/gain behavior.
• TDC1 (Time-to-Digital Converter) Time-to-digital converter providing timestamps with up to 2ns resolution, also capable of counter mode operation with integration times from 1 to 65535ms.
• TDC2 (Time-to-Digital Converter) Time-to-digital converter for photon counting and timing applications.
• OPMSI (Silicon Optical Power Meter) Digital optical power meter with large-area silicon photodiode, sensitive to 320-1100nm wavelength range, with 2^-16 resolution of full range.
• OPMGE (Germanium Optical Power Meter) Digital optical power meter with germanium photodiode for 800-1800nm wavelength range detection in near-infrared applications.
• SPS (Single Photon Spectrometer) Single photon spectrometer for spectral analysis of infrared single photon sources.
• DLD (Diode Laser Driver) Laser diode and TEC controller for precise control of diode laser systems with temperature regulation.
• RACK3U42HP (9.5" Eurocard Rack) 9.5-inch Eurocard rack system for powering and housing modular instrument units.
• RACK3U84HP (19" Eurocard Rack) 19-inch Eurocard rack system for powering and housing modular instrument units.

Quantifiable outcome

• CPPS-810 outputs >10,000 photon pairs per second with >25% heralding ratio and CAR >500
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• P & B Technologies Co., Ltd.coreChannel Partner/ Reseller/ Distributor · 17 April 2026Exclusive distributor for China market. Handles hardware showcases at Chinese conferences including the 10th National Young Quantum Symposium at Hangzhou Normal University. Provides local sales support and customer engagement for the Chinese research market.
• EcosperityminorOthersS-Fifteen Instruments is supported by Ecosperity, indicated by their logo in the website footer. Nature of support (funding, mentorship, advisory) is not specified.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Regional players

• QuantumCTek (国盾量子): China's leading commercial QKD vendor, spun out of USTC, offering QKD systems, single photon detectors, and quantum cryptographic equipment primarily to Chinese government, telecom, and research customers. Direct QKD competitor in S-Fifteen's exclusive China distributor territory.
• QNu Labs: India-based QKD and quantum security company building QKD systems, quantum random number generators, and quantum-safe networking products primarily for the Indian market and selected international customers. Comparable in QKD and QRNG product categories.

Emerging players

• Swabian Instruments: Stuttgart-based vendor of high-resolution time taggers, single photon counters, and pulse pattern generators aimed at quantum optics and quantum communication experiments. Directly comparable products (Time Tagger, Pattern Generator) targeting overlapping customer use cases in academic quantum labs.
• QuintessenceLabs: Australia-based quantum security company providing quantum random number generators, quantum key distribution systems, and key management solutions. Directly comparable QRNG and QKD product lines with overlapping government and research customer base.

Direct peers

• MagiQ Technologies: U.S.-based developer of quantum key distribution systems, QRNGs, and photonic quantum security products serving government and enterprise customers. Directly comparable in QKD and quantum cryptography product offerings.
• ID Quantique: Swiss-headquartered pioneer and global leader in quantum key distribution systems, single photon detectors, quantum random number generators, and photonic quantum instrumentation. Directly comparable product portfolio (QKD systems, SPDs, QRNGs) and similar academic/research customer base.
• Becker & Hickl: German specialist in TCSPC (time-correlated single photon counting) electronics and detector modules widely used in quantum optics and photon correlation experiments. Directly comparable in single photon timing instrumentation serving similar academic research labs.
• PicoQuant: German specialist in single photon counting modules, TCSPC electronics, picosecond pulsed diode lasers, and time-resolved fluorescence instrumentation. Directly comparable in photon detection, timing electronics (TDC/TCSPC), and quantum optics lab customers.

Broad incumbents

• Toshiba Research Europe (QKD): Toshiba's quantum cryptography research program (Cambridge, UK) is a long-standing developer of photonic QKD systems and field-deployed quantum key distribution networks. Directly comparable QKD technology and serves overlapping research and telecom customers, but as part of a much larger corporate parent.
• Thorlabs: Large U.S. photonics incumbent offering single photon detectors, photodiodes, optical power meters, spectrometers, laser diodes, and timing electronics across a 20,000+ SKU catalog. Comparable in many overlapping product categories but operating as a broad portfolio vendor rather than a quantum-specialist.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks7 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/s-fifteen-instruments
• LinkedInlinkedin.com/company/s-fifteen-instruments-pte-ltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about S-fifteen Instruments Pte. Ltd.