QuTeSS Lab

Laboratory for Quantum Technology & Space Sciences

In recent years, Quantum Mechanics has increased its horizon beyond pure science to become an important driving force for the next technological revolution. The innovations include, but are not limited to Quantum Computing, Quantum Communication, Quantum Sensing & Metrology, and Quantum Materials & Devices.

In order to train the next generation to become Quantum literate, it becomes imperative to introduce experiments in Quantum Science & Technology (QST) to undergraduate and graduate laboratories. To provide hands-on experience in this emerging field, we have developed QST Kits as follows:

Key Features	Applications
Easy installation Compact setup built on an optical breadboard Single-photon detectors included in all kits Interchangeable components for different experiments	Lab Experiments & Demonstrations Research in Quantum Science & Technology:

QST Kit-1: Biphoton Source

What it includes:
Biphoton Source: Pump Laser at wavelength 405 nm, Nonlinear SPDC Crystal and Optics (One Unit) Translational Stage (One Unit) Control System: Three Single-Photon Detectors, Time Tagger, and Translational Stage Electronics (One Unit) Computer Interface Software written in Python & distributed through a USB Drive (One Unit) This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What it includes:

Biphoton Source: Pump Laser at wavelength 405 nm, Nonlinear SPDC Crystal and Optics (One Unit)
Translational Stage (One Unit)
Control System: Three Single-Photon Detectors*, Time Tagger, and Translational Stage Electronics (One Unit)
Computer Interface Software written in Python & distributed through a USB Drive (One Unit)

*This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What Can Be Done
Heralded single photon generation Random number generation Single photon interference and diffraction Hong-Ou-Mandel (HOM) interferometer

Features
Heralded Single-Photon Source with g⁽²⁾(τ = 0) < 0.1 Photon-pair generation at 810 nm Photon pair generation rate: > 10 kHz Replaceable pump laser

QST Kit-2: Polarization-based Entangled Photon Source

What it includes:
Polarization-Entangled Photon Source: Pump Laser at wavelength 405 nm, Nonlinear SPDC Crystal and Optics (One Unit) Rotational Stage (Four Units) Control System: Two Single-Photon Detectors, Time Tagger, and Rotational Stage Electronics (One Unit) Computer Interface Software written in Python & distributed through a USB Drive (One Unit) This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What it includes:

Polarization-Entangled Photon Source: Pump Laser at wavelength 405 nm, Nonlinear SPDC Crystal and Optics (One Unit)
Rotational Stage (Four Units)
Control System: Two Single-Photon Detectors*, Time Tagger, and Rotational Stage Electronics (One Unit)
Computer Interface Software written in Python & distributed through a USB Drive (One Unit)

*This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What Can Be Done
Bell parameter measurement Quantum state tomography Fidelity measurement of entangled state

Features
Entangled sate fidelity > 90% Photon-pair generation around 810 nm Photon pair rate: >10 kHz Replaceable pump laser

QST Kit-3: B92 Protocol

What it includes:
Alice/Transmitter Module: Weak-Coherent Pulse Source, Fiber Patch Cables, Fiber Collimators, and Optics (One Unit) Bob/Receiver Module: Two Single Photon Detectors, Time Tagger and Optics (One Unit) Computer Interface Software written in Python & distributed through a USB Drive (One Unit) This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What it includes:

Alice/Transmitter Module: Weak-Coherent Pulse Source, Fiber Patch Cables, Fiber Collimators, and Optics (One Unit)
Bob/Receiver Module: Two Single Photon Detectors*, Time Tagger and Optics (One Unit)
Computer Interface Software written in Python & distributed through a USB Drive (One Unit)

*This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What Can Be Done
B92 QKD protocol with weak coherent pulse Quantum Bit Error Rate (QBER) measurement Key rate measurement B92 QKD protocol with heralded single photon source [need to purchase separate biphoton source (Quantum-Optics Kit-1)]

Weak Coherent Pulse Source
Laser Diode Wavelength ~780 nm Weak coherent pulses @ ≥ 1 MHz with tuneable mean photon number Polarizations: Vertical and Diagonal FPGA-based Random number generator is included for the selection of polarization states and bases

QST Kit-4: BB84 Protocol

What it includes:
Alice/Transmitter Module: Weak-Coherent Pulse Source, Fiber Patch Cables, Fiber Collimators, and Optics (One Unit) Bob/Receiver Module: Four Single Photon Detectors, Time Tagger and Optics (One Unit) Computer Interface Software written in Python & distributed through a USB Drive (One Unit) This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What it includes:

Alice/Transmitter Module: Weak-Coherent Pulse Source, Fiber Patch Cables, Fiber Collimators, and Optics (One Unit)
Bob/Receiver Module: Four Single Photon Detectors*, Time Tagger and Optics (One Unit)
Computer Interface Software written in Python & distributed through a USB Drive (One Unit)

*This is a third-party item that can be purchased by the buyer. Otherwise, the Qutess Lab can provide at an extra charge. The price of the Kit does not include the cost of Single-Photon-Detectors, which come into variety of models and cover a range of prices.

What Can Be Done
BB84 QKD protocol with weak-coherent pulse QBER measurement Key rate measurement BB84 QKD protocol with heralded single-photon source [need to purchase separate biphoton source (Kit-1)]

Weak Coherent Pulse Source
Laser Diode Wavelength ~780 nm Weak coherent pulses @ ≥ 1 MHz with tuneable mean photon number Polarizations: Vertical, Horizontal, Diagonal, and Anti-Diagonal FPGA-based Random number generator is included for the selection of polarization states and bases