QbitchanBOOT / CORE / STATE / TERMINAL
Skip intro

SYSTEM 001 / READY WHEN YOU ARE

Boot into Qbitchan.

A desktop for quantum experiments.

AUTOMATIC STARTUP · NO SCROLL NEEDED
INITIALIZING THE WORKSPACE

One instruction at a time.

02 / INSIDE THE MACHINE

Follow the signal.

The circuit is the doorway.
Your experiments are on the other side.

ENTERING THE CORE
03 / THE STATE SPACE

Inside the signal.

The terminal is opening next.

QBITCHAN
AN INTERACTIVE EXPLORATION
AUTOMATIC STARTUP
THROUGH THE MACHINE
01 / THE TERMINAL
000

Loading the terminal…

qbitchan / research desktopStarting lab
QBITCHAN / WORKSPACE 001Propose. Execute. Question.
QBIT / ENGINE 01Opening local channel…
SESSION
—
UPTIME
00:00
DONE / JOBS
0 / 0
LAST EXECUTION
—

Submit a circuit

H, X, Z and controlled X. Qubits start at 0; q0 is the leftmost bit. Separate gates with spaces. Maximum 24 gates.Runs 1,024 shots on an ideal classical simulator. Circuit and results become public. Up to 10 shared runs per hour per connection.

LAB

circuit.lab

EXPERIMENT / IDEAL STATE

What happens before you look?

Try H twice. Watch the state return to where it started.

|0⟩|1⟩xy
|ψ⟩ = |0⟩
BLOCH SPHERE / PURE STATE
01 / APPLY A GATE
|0⟩
Waiting for a gate
M
02 / EXPECTED OUTCOMESZ BASIS
|0⟩
100%
|1⟩
0%

Ready in |0⟩. Try H to create an equal superposition.

LABone-qubit engine
DATA

measurement.scope

PREPARED STATE / Z BASIS

|0⟩

SHOTS—
DEVIATION FROM EXPECTED—

MeasuredExpected
SHOT TAPE / WAITING FOR A RUN0 1

DATAactual local measurements
FILES

experiments

Your runs and the starter experiments. Select a row to inspect its results.

RUN / CIRCUIT01
FILESsaved on this device
SHELL

terminal

CHANNEL OPENING
STARTINGPreparing the first experiments
SHELLlocal command interface
NOTES

field.notes

START HERE / 3 MINUTES

Small circuit.
Surprising result.

  1. Press H. Outcomes become equally likely.
  2. Press H again. Interference returns the state to |0⟩.
  3. Try H, then Z, then H. Compare the outcome.

The starter set runs three circuits: H H returns to zero, H Z H flips to one, and H prepares an equal superposition. Compare their saved results in experiments.

Read the science at IBM Quantum
NOTESyour lab notebook