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Ket Steps

YARON AMIR BENJAMIN DR. GOLDSTEIN

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About this app

Ket Steps is a symbolic workpad for quantum states. Define kets, bras, and operators in standard bra-ket notation, compose them, and get exact results (fractions, imaginary units, and ...) without numeric approximation unless you ask for it. Each line is a typed, labeled object. Select two, apply an operation, and the result appears contrasted against the input for quick validation, not just the answer. Every result exports to LaTeX with a single tap. **What it does today** Single- and multi-qubit states, tensor products, standard operators (Pauli X/Y/Z, Hadamard, and more), inner products, outer products, and operator-ket application. Exact symbolic arithmetic throughout. Norm validation on every state. A growing library of named objects to insert with one tap. **Where it's going** Ket Steps aims to become a complete toolkit for quantum information theory. Join our Kets on their journey. **Privacy** Everything stays on your device. No data is collected, transmitted, or stored anywhere else.

What's new

Version 1.4 · May 18, 2026

You've got 1st Qubit. But what about 2nd Qubit? This version update focusses on Tensor Products and the fun you can have once multiple Qubits get involved: / Look at Schmidt Decomposition of 2-factor Tensor Products / Explore quantum teleportation: Assign Alice a qubit and share an ebit with Bob observe spooky action in action of how Alice' qubit state teleports over to Bob in sequence / Grapple with dense coding: Share an ebit between Alice and Bob and follow the step by step instructions of how Alice can prepare 2 qubit communication by sharing 1 qubit and 2 bits of classic information Also: Cleanup under the hood / More information on states & stuff: Get SVD for operators, learn about entanglement rate, and more to discover / Performance boost ?! The app should now be faster, especially when you work with larger worksheets & more complex objects

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