Va­can­cies for the 2026 co­hort

For the graduate year 2026 (start: 01.09.26), positions are offered in the groups listed below as part of the PhoQS - FUTURE combined call for applications:

  1. Open PhD positions in one group
  2. Open interdisciplinary PhD positions between two groups

Unsolicited applications for groups that have not explicitly called for proposals in the current year or a proposal for a project are also possible.

Up to three desired projects/groups can be specified in the application.

Click here for information about the application.

1) PhD po­s­i­tions in a group

Tim Bartley group: Meso­scop­ic quantum op­tics

We are looking to fill a position starting in 2026 on the following topic: Photon-number-resolving SNSPD for long optical pulses

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Nich­olas Güsken group: Quantum Photon­ics & Op­to­elec­tron­ics - Act­ive Nan­o­photon­ics

We are looking to fill a position starting in 2026 on the following topic: Single photon sources in photonic integrated circuits (PICs)

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Klaus Jöns group: Hy­brid Quantum Photon­ic Devices

We are looking to fill a position starting in 2026 on the following topic: Entanglement distribution in hybrid quantum networks

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Christine Sil­ber­horn group: In­teg­rated quantum op­tics

Two positions are to be filled with a start date of 2026 on the following topics: 1. From Material to Device: Realisation of Integrated Nonlinear and Quantum Optics in Lithium Niobate-Tantalate Mixed Crystals 2. THz quantum spectroscopy (with Dr. Benjamin Brecht)

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Jan Sper­ling group: The­or­et­ic­al quantum sys­tems

We are looking to fill a position starting in 2026 on the following topic: Numerical treatment of the separability problem

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2) PhD po­s­i­tions in­ter­dis­cip­lin­ary between two groups

Two Pro­jects between AG Sil­ber­horn (Phys­ics) & AG Scheytt (Elec­tric­al En­gin­eer­ing)

1) Time- multiplexed quantum sources and circuits for quantum networks and simulations 2) Development of electro-optically programmable TFLN interferometers for universal photonics processors

Pro­ject between AG Sper­ling, AG Bartley & AG Zent­graf (all Phys­ics)

Multichannel beamsplitter network for correlated photon pairs using cascaded metasurfaces

Pro­ject between AG Sil­ber­horn & Dr. Chris­tof Eign­er (PhoQS In­fra­struc­ture)

Integrated quantum photonics featuring electro-optic modulation in nanoscale lithium tantalate waveguides PP:TFLT – Development of electrically driven modulators and SPDC Sources as a platform for quantum systems

Pro­ject between AG Scheytt (Elec­tric­al En­gin­eer­ing) & AG Jöns (Phys­ics)

Synchronised Entanglement Distribution over Fiber with Picosecond Precision

Pro­ject between AG Sper­ling & AG Schu­mach­er (both Phys­ics)

Exceptional points and nonlinear dynamics for non-Hermitian physics

Pro­ject between AG Bartley & AG Sil­ber­horn (both Phys­ics)

Superconducting detectors on thin-film lithium niobate for feed-forward

Pro­ject between AG Güsken & AG Jöns (both Phys­ics)

Towards a quantum internet - Manipulation of erbium quantum emitters in integrated photonic platforms

Pro­ject between AG Re­u­ter & AG Jöns (both Phys­ics)

Fabrication and characterisation of cavity enhanced single photon sources based on molecular beam epitaxy grown semiconductor quantum dots

Pro­ject between AG Schu­mach­er & AG Jöns (both Phys­ics)

Deterministic multiphoton states from semiconductor quantum dots

Pro­ject between AG Sper­ling & AG Sil­ber­horn (Dr. Ben­jamin Brecht), (both Phys­ics)

Frequency multiplexed/encoded quantum networks and processors

Pro­ject between AG Bartley & AG Jöns (both Phys­ics)

Interfacing Photons from Quantum Dots and Parametric Down-Conversion on an Urban Quantum Network

Pro­ject between AG Scheytt & AG För­st­ner (both Elec­tric­al En­gin­eer­ing)

Integrated circuits for quantum processing based on semiguided waves: from theory to applications

Pro­ject between AG För­st­ner (Elec­tric­al En­gin­eer­ing) & AG Jöns (Phys­ics)

Coupling into Topological Cavities - inverse design and realisation

Pro­ject between AG Sper­ling, AG Sil­ber­horn (both phys­ics) and AG Ghari­bi­an (Com­puter Sci­ence)

Complexity of bosonic quantum computation